How to use them

Choose 3–5 lenses for one problem. Record your answers and a concrete change. Then test it with a player: team answers remain assumptions until supported by playtest observations.

Numbers 1–113 follow the second edition. Three third-edition additions use 67½, 93½ and 95½. Deterding’s method is listed separately.

Experience and emotions

2Essential ExperienceIdentify the experience that gives the game its purpose.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How would you describe its essential experience without listing features?
  • Which mechanic expresses that experience, and which dilutes it?
5FunFind the specific actions players want to repeat.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which action does a tester repeat voluntarily?
  • What would be lost if its most enjoyable moment were removed?
1EmotionDesign the player's feelings alongside the sequence of events.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What emotional change should one session create?
  • Where does a playtest reveal a different feeling, and what causes it?
8Problem SolvingView play as problems the player learns to solve.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What problem does the player's next action address?
  • Do combinations of rules create new problems beyond additional levels?
6CuriositySustain questions players want to answer through play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What does the player want to discover after first encountering the game?
  • How does answering one question reveal another interesting one?
7Endogenous ValueConnect points and items to things that matter within the rules.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What useful decision does this item make possible?
  • Does the reward remain desirable after its novelty wears off?
4SurpriseCreate unexpected events that make sense once they happen.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which player expectation does the game disrupt in an interesting way?
  • Can a player create an unexpected situation for themselves or an opponent?
3VenueConsider the physical and social setting in which play happens.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What surrounds the player, and how much attention can they give?
  • How do noise, screen size or other people change the session?

Player and motivation

19The PlayerDesign for specific people and play contexts.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What does the intended audience already know and expect?
  • Which interface element assumes experience that audience lacks?
23MotivationUnderstand why a player starts and sustains an action.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What motivates continued play after the stated goal is complete?
  • Which external reward displaces interest in the action itself?
22NeedsConnect the experience to the intended audience's needs.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What need does this mode or reward support?
  • Does the system demand something that conflicts with the player's need?
21FlowAlign a clear goal, focused attention and an achievable challenge.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Where is the player bored, and where do they lose a path to success?
  • How does the next step build on the skill already learned?
20PleasureDistinguish pleasures such as exploration, connection and mastery.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What kinds of pleasure do different actions provide?
  • Which pleasure valued by the audience lacks support?
25JudgmentExamine how the game judges actions and communicates results.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Does the player understand which action earned that evaluation?
  • Does evaluation help improvement or merely announce failure?
24NoveltyOffer a noticeable difference that matters during play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What feels new to the player, and how does it change decisions?
  • Does that feature remain interesting once it becomes familiar?

Concept and ideas

14The Problem StatementDefine the design problem before choosing a solution.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What observable result are we trying to create for the player?
  • Which current feature does not help solve that problem?
9The Elemental TetradAlign mechanics, story, aesthetics and technology.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does each of the four elements support the essential experience?
  • Where does improving one element undermine another?
16Risk MitigationTest risky assumptions before expensive development.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which mistaken assumption would make the project unviable?
  • Which inexpensive experiment would test that assumption directly?
15The Eight FiltersReview the concept from creative, audience, technical and business perspectives.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Does the idea pass reviews of taste, audience, design, novelty, business, technology, social fit and playtesting?
  • Which failed review requires a concept change rather than cosmetic polish?
11UnificationCheck whether details reinforce a shared theme.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What shared promise connects rules, sound and visuals?
  • Which detail feels out of place, and what could replace it?
17The ToyCheck whether interaction is enjoyable without a required goal.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Is interacting still appealing when victory and scoring are disabled?
  • Which system property invites experimentation?
10Holographic DesignConnect the game's structure to the player's experience of it.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does a rule change affect feelings, story and presentation?
  • Can a tester's impression be traced to a specific combination of elements?
12ResonanceLook for ideas that produce a strong personal response.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which part of the concept resonates most with its creator and audience?
  • What player action could convey that response?
13Infinite InspirationDraw inspiration from experiences beyond other games.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What experience outside games suggests an unusual rule or feeling?
  • What matters most when translating it into play?
18PassionCheck whether interest in the concept can sustain the work.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which part of the game keeps the team interested after setbacks?
  • Does that interest align with what attracts the player?

Rules and systems

32GoalsMake goals understandable, attainable and appealing to the player.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Can the player explain the immediate and overall goal?
  • Which goal allows several meaningful ways to achieve it?
31ActionDistinguish available commands from the strategies they enable.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What can the player do, and what decisions emerge from combining actions?
  • Which action is rarely used, and why is it still needed?
33RulesReview explicit restrictions and rules silently enforced by the system.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which rules must the player know before the first important decision?
  • Where does a rule's implementation differ from the game's explanation?
28The State MachineDescribe the system's valid states and transitions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which transitions can the player trigger, and under what conditions?
  • Is there a state that cannot be exited in the expected way?
34SkillIdentify the physical, mental and social skills used in play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which skill explains the difference between a beginner and an expert?
  • Does the game provide a safe way to practice that skill?
+Intrinsic Skill AtomsExamine an inherent challenge as a loop of goals, actions, rules and feedback.

Sebastian Deterding · Deterding: intrinsic skill atoms

Review questions

  • Which skill develops through repeated interaction with this loop?
  • Which difficulties belong to the activity itself, and which come from a cumbersome system?
26Functional SpaceModel space through the connections and constraints on actions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which positions offer different possibilities despite looking similar?
  • How do boundaries and transitions between areas change strategy?
27TimeTreat duration, order and pacing as parts of the rules.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which decisions change when time speeds up or slows down?
  • Where does waiting create tension, and where does it merely delay play?
30EmergenceLook for complex behavior arising from simple interactions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What unexpected ways of playing arise from combined rules?
  • Could richer interactions replace an additional standalone feature?
36ChanceExamine the role of uncertainty and how probabilities are understood.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does randomness affect decisions before an event and reactions afterward?
  • Can the player manage risk or merely wait for the outcome?
35Expected ValueCompare an outcome's likelihood with the value of its result.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What are the average gains and losses of each risky decision?
  • Does that calculation match the value perceived by the player?
29SecretsDistribute information deliberately between the system and players.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who knows an important fact, and who can discover it?
  • Does hidden information create an interesting inference or a random mistake?

Choices and balance

39Meaningful ChoicesGive decisions distinct consequences and real tradeoffs.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Are there situations in which each offered option is useful?
  • How can the player understand a choice's cost before making it?
38ChallengeAdjust difficulty to skill growth and the intended experience.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does the player understand a failure and the next improvement to try?
  • Can difficulty change without losing the essence of the challenge?
53BalanceTune relationships between elements to support the intended experience.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which strategy crowds out the others, and under what conditions?
  • How would a balance change affect beginners and experts differently?
37FairnessAlign the conditions of success with the mode's promise.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What advantages do participants have before competition begins?
  • Does the audience consider those differences appropriate for this mode?
48Simplicity/ComplexityDistinguish complicated rules from deep resulting decisions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which rule could be removed while preserving interesting decisions?
  • Which simple interaction generates varied situations?
41Skill vs. ChanceChoose a balance of control and uncertainty that suits the audience.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How often does the stronger player lose because of an uncontrollable event?
  • Does that result support the intended tension or undermine trust?
46RewardChoose the reward's form and timing to fit the player's action.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What valuable feedback does this reward provide?
  • Does it encourage the intended play or incidental point farming?
47PunishmentExamine what a loss teaches and how much time it costs.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What does the player understand after a penalty that they did not know before?
  • Are the consequences proportionate to the error and recovery options?
49EleganceSeek elements that serve several coherent purposes.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Could one element support learning, strategy and theme?
  • Which standalone system duplicates something already present?
52EconomyReview how game value is produced, spent and exchanged.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which sources and sinks control the amount of a resource?
  • Do spending decisions remain interesting late in the game?
42Head and HandsBalance thought with the physical execution of actions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Where does success require planning, and where does it require precise execution?
  • Can a player's strength compensate for a weakness within suitable limits?
43CompetitionMake comparisons of performance understandable and motivating.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What are rivals comparing, and how much depends on their actions?
  • What encourages the losing player to try again?
44CooperationCreate reasons to coordinate and help one another.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does one player's contribution expand another's options?
  • Can a participant remain useful despite a skill gap?
45Competition vs. CooperationExamine how shared and opposing interests interact.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • When is helping beneficial, and when is competing beneficial?
  • Does an individual reward undermine the team's shared goal?
40TriangularityCompare a small safe gain with a larger risky one.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What does the player gain by choosing a dangerous route over a safe one?
  • Does the best choice change with the current situation?
50CharacterPreserve expressive quirks that distinguish the game from a generic design.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which unusual property makes the game recognizable?
  • Does the rough edge being fixed hinder play or give the game character?
51ImaginationDecide what to show explicitly and what players can imagine.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which gaps will players willingly fill with their imagination?
  • Where does missing information obscure a required action?

Puzzles and interfaces

59ControlCheck whether intention, action and outcome feel connected.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Does a familiar command produce the expected result?
  • Where does latency or a restriction make control feel lost?
63FeedbackCommunicate state and action consequences at the right time.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does the player distinguish an accepted command from an ignored one?
  • Does the system's response help the player choose their next action?
62TransparencyMake controls understandable enough for attention to remain on play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • When does the player stop thinking about the interface and focus on the problem?
  • Which operation repeatedly draws attention back to the controls?
60Physical InterfaceConsider the player's actual devices and body.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Is a frequent action comfortable on the intended device?
  • How do grip, effort or fatigue affect available controls?
61Virtual InterfaceOrganize on-screen elements around the player's decisions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What information must be visible at the moment of choice?
  • Which element consumes attention without helping action?
54AccessibilityLet players begin solving a problem without an insurmountable entry barrier.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Is there an understandable first step toward solving the puzzle?
  • What hint helps players begin while preserving their own discovery?
55Visible ProgressMake progress toward a goal visible, especially in longer tasks.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What changed after the player's effort, and can they see it?
  • How can partial success be shown without revealing the whole solution?
58The PuzzleCreate an understandable problem with discovery rather than hidden-demand guessing.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What insight allows the player to move from being stuck to solving it?
  • Is there enough observable evidence to reach that insight?
66Channels and DimensionsDistribute information across visual, audio and other signals.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which messages compete within the same perceptual channel?
  • Can important states be distinguished without confusing their signals?
67ModesShow when the same controls change meaning.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does the player recognize the current mode before acting?
  • Can a mode switch causing repeated errors be removed?
67½MetaphorCheck whether a familiar comparison makes an interface understandable.

Jesse Schell · Schell: third-edition additions

Review questions

  • What expectations does the metaphor create, and does the game satisfy them?
  • Where would abandoning the metaphor make interaction clearer?
64JuicinessAmplify an action's feel through expressive, coherent feedback.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How do sound, motion and visuals emphasize a meaningful moment?
  • Do abundant effects obscure an important signal?
65PrimalityUse immediate human responses deliberately.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which image or sound evokes a response before rules are explained?
  • Does that response support what is happening?
56ParallelismOffer multiple problems players can switch between.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What can the player explore when stuck on the main problem?
  • Do all available branches require the same missing knowledge?
57The PyramidCombine learned pieces into a culminating challenge.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which earlier solutions provide material for the final challenge?
  • Does the player understand the links before needing to combine them?

Team and release

103PlaytestingTest important questions by observing actual play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which assumption should the next playtest examine?
  • What observation would distinguish support from a polite reaction?
101The TeamAlign the concept, responsibilities and ways of collaborating.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Can team members explain the current version's goal consistently?
  • Where does a decision stall because responsibility is unclear?
104TechnologyEvaluate technology through its effect on the concept and process.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which game requirement makes this technology necessary?
  • Which tool limitations should be tested in a prototype?
102DocumentationWrite documents for a specific decision and reader.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who needs this document, and what action does it support?
  • Which part has already drifted from the current game?
100LoveExamine care for the project as expressed through concrete actions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which decision shows the team's care for the player's experience?
  • What helps sustain that care during routine work?
107The ClientDistinguish the client's stated request from their underlying need.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What outcome is the client trying to achieve through this feature?
  • What check would show that the outcome has been achieved?
109ProfitConnect revenue, costs and sales volume to testable assumptions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How many sales are needed to cover development and distribution?
  • What verified evidence supports the demand forecast?
108The PitchPrepare an explanation for a specific audience and decision.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What should the listener understand and decide after the pitch?
  • Which demonstration supports the main promise better than a description?
105The Crystal BallTreat future changes as assumptions with explicit uncertainty.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which anticipated change will affect release or maintenance?
  • How can dependence on a possibly wrong forecast be reduced?
106UtopiaConsider the positive possibility the game brings into the world.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What becomes possible for people because of this game?
  • Can that contribution be observed beyond the creator's promise?

Interest and story

69The Interest CurveDistribute rising tension, peaks and pauses over time.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Where does a tester's attention rise and fall during a session?
  • Is there enough quieter time between intense episodes?
78StoryConnect narrative to player actions, goals and consequences.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What does the player learn through action rather than explanation?
  • Does the story support what the rules encourage players to do?
79FreedomClarify where the player can genuinely choose.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which decisions change play, and which merely imply choice?
  • Which restrictions aid orientation rather than feeling arbitrary?
68MomentsIdentify brief episodes players will remember.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which moment does a tester describe first after a session?
  • What prepares that moment and allows it to stand out?
70Inherent InterestLook for interest inherent in the subject and situation.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What attracts attention before rewards and progression are introduced?
  • How does player action let them explore that interest?
74The ObstacleCreate obstacles that make achieving a goal meaningful.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Why does overcoming this obstacle matter to the player?
  • Does the challenge reveal the protagonist or merely delay progress?
80HelpExamine whom the protagonist helps and why that matters to the player.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who benefits from the player's actions?
  • How does the game show help's outcome beyond merely promising it?
84The WorldCreate a coherent world worth exploring beyond its plot.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which patterns in the world can players notice and test?
  • What connects separate places and stories into a coherent whole?
83FantasyExamine the wish a player can inhabit within the game world.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who does the player want to become, and what do they want to do?
  • Which required mechanic undermines that role?
73The Story MachineExamine stories emerging from actions and consequences.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which episode can a player retell as their own story?
  • Which rules create different dramatic consequences across sessions?
81Indirect ControlGuide attention through space, goals and cues.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which detail encourages the intended route without a direct command?
  • Does the player retain a sense of making their own decision?
72ProjectionHelp the player imagine occupying the protagonist's position.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What links the player's intention to the character's action?
  • Where does the character act in a way that breaks that identification?
76The Hero's JourneyUse the journey structure to examine growth rather than as a mandatory template.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How do challenges change the protagonist from beginning to end?
  • Which stage helps the game, and which exists only to satisfy a template?
75Simplicity and TranscendenceCombine a recognizable foundation with an extraordinary scale or possibility.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What simple conflict makes events immediately understandable?
  • How does the game transcend the ordinary experience of that conflict?
71BeautyUse aesthetic choices to enrich the experience.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which detail makes players want to pause and examine it?
  • Does beauty coexist with clear player action?
77The Weirdest ThingReview the world's most unusual premise for clarity and consistency.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What seems least plausible to new players?
  • What internal logic makes that premise acceptable?
82CollusionCoordinate the world and its characters to support the intended experience.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How do the environment and characters jointly support the player's path?
  • Where does that coordination become conspicuous and break plausibility?

Characters and world

86Character FunctionGive each character a clear role in the system and narrative.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How would play change if this character were removed?
  • Could duplicate roles be combined without losing meaning?
85The AvatarShape the relationship between the player and their in-world representation.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which avatar traits help the player accept it as their representation?
  • What can be expressed through the avatar, and what is fixed by the game?
87Character TraitsExpress character traits through observable behavior.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which actions reveal a trait without stating it explicitly?
  • Does it appear consistently across different circumstances?
89The Character WebExamine character relationships as sources of conflict and change.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which relationships change the characters' decisions?
  • How will the relationship network change after the player's action?
91Character TransformationMake character development a consequence of experienced events.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which decision shows that the character has changed?
  • Do earlier events prepare that change?
92Inner ContradictionUse conflicting desires and values to give a character depth.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Which two things important to the character cannot both be preserved?
  • Which action will reveal that conflict?
94AtmosphereCoordinate sensory details to support the intended mood.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What mood do light, sound, pacing and surroundings create together?
  • Which element conflicts with that mood?
93½PresenceExamine the feeling of being inside the world, especially in VR and AR.

Jesse Schell · Schell: third-edition additions

Review questions

  • When does the player feel genuinely located within the world?
  • Which response or inconsistent detail breaks that feeling?
95SpectationMake play understandable and interesting to a spectator.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Can a spectator understand the goal, risk and success without controlling play?
  • Which moments are easy to discuss or show to others?
88Interpersonal CircumplexConsider behavior along dominance and friendliness dimensions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How does the character's stance differ around a friend and an opponent?
  • Do speech and actions express that relationship style?
90StatusShow characters' relative standing and how it changes.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who holds influence in a scene, and how is that visible?
  • How does a status change affect behavior and player options?
93The Nameless QualityLook for a sense of a living whole created by coherent details.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What makes the world feel convincing beyond the main task?
  • Which detail feels mechanical and disrupts the whole?
95½CheatabilityReview ways to bypass the rules and trust in game outcomes.

Jesse Schell · Schell: third-edition additions

Review questions

  • Can someone gain an advantage outside the rules, and would it be noticed?
  • What allows players to trust the fairness of results?

Social play

98CommunitySupport shared interests, norms and sustainable roles.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What connects participants beyond being present at the same time?
  • How does a newcomer understand the norms and find a useful role?
96FriendshipCreate opportunities to meet people and strengthen relationships.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What lets players meet regularly and get to know one another?
  • How does the system support continued contact after a shared task?
99GriefingExamine ways players can disrupt others for disruption's sake.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • How could a permitted action ruin another person's session?
  • Can harm be limited without eliminating useful interaction?
97ExpressionLet players express preferences through meaningful actions.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What can a player do in their own way while remaining understandable to others?
  • Does the result reflect a personal choice or merely the amount spent?

Purpose and consequences

111ResponsibilityTake responsibility for the consequences of design choices.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Who is affected by this decision, and how?
  • What observable harm calls for a design change?
110TransformationConsider how the experience affects someone after play.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What change in knowledge, habits or attitudes might play produce?
  • How could beneficial and unwanted effects of that change be examined?
113Your Secret PurposeName the personal purpose behind creating the game.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • What personal motive am I pursuing through this project?
  • Does today's work align with that motive?
112The RavenRelate limited time to the value of the work.

Jesse Schell · Schell: 113 second-edition lenses

Review questions

  • Is this project worth time that cannot be recovered?
  • Which work should stop so that what matters can be preserved?

Sources and attribution

The concise explanations and review questions are original gamemechanics.pro wording. This is an independent reference, not a translation of the cards or a substitute for the book. Names, concepts and external material remain their authors’ work.

  • Schell: 113 second-edition lenses

    Jesse Schell · The core set was checked against the supplied second-edition notes. The author’s official page links to the book and deck.

  • Schell: third-edition additions

    Jesse Schell · The third-edition table of lenses confirms 67½, 93½ and 95½. The additions were checked in the official deck.

  • Deterding: intrinsic skill atoms

    Sebastian Deterding · A separate gameful design method from a 2015 paper, explained in the author’s How to Do Gameful Design course. It does not extend Schell’s numbering.

Original explanations and questions: CC BY 4.0 · gamemechanics.pro contributors