{"schemaVersion":1,"record":{"key":"mechanic/engagement-retention--family-07","type":"mechanic","id":"engagement-retention--family-07","lang":"en","title":"Loot and collecting","summary":"Loot fills a set of items and creates long-term goals. Rarity and an incomplete collection affect the value of the next find.","updatedAt":"2026-10-22","status":"active","url":"https://gamemechanics.pro/en/knowledge/mechanic/engagement-retention--family-07/","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/mechanic/engagement-retention--family-07.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/mechanic/engagement-retention--family-07.md","aliases":[],"tags":["Engagement, retention and addictive patterns","Mechanics catalog"],"sourceIds":["source-43a59b91bdde2acb"],"sources":[{"id":"source-43a59b91bdde2acb","title":"Vampire Survivors","url":"https://store.steampowered.com/app/1794680/","verifiedAt":null}],"sections":[{"id":"principle","title":"How it works","body":"Obtaining loot and completing the collection provides long-term goals and changes the value of individual finds."},{"id":"variants","title":"Variants","body":"### Variants and applications\n\n<a id=\"family-07-variants\"></a>\n\n- Item rarities: a clear hierarchy makes getting a rarer item a goal <a id=\"variant-engagement-retention-07-01\"></a>\n- An unfinished collection: empty spaces remind of missing items <a id=\"variant-engagement-retention-07-02\"></a>\n- Full Set Bonus: Individual finds receive additional value in the set <a id=\"variant-engagement-retention-07-03\"></a>\n- Collecting fragments: every small find brings you closer to obtaining the whole object <a id=\"variant-engagement-retention-07-04\"></a>\n- Leveling through duplicates: getting an item again remains useful <a id=\"variant-engagement-retention-07-05\"></a>\n- Random characteristics of items: even a familiar item can drop in the best variant <a id=\"variant-engagement-retention-07-06\"></a>\n- Finding synergy for a build: the next item is able to complete the desired combination <a id=\"variant-engagement-retention-07-07\"></a>\n- Alternate versions: special colors, shapes, signatures and variants expand the collection without changing the core mechanics <a id=\"variant-engagement-retention-07-08\"></a>"},{"id":"context","title":"Context and limits","body":"A map of 160 techniques for analyzing interest, returns, costs and pressure on the player. Involvement in itself does not mean dependence; the presence of separate mechanics does not determine the diagnosis or prove causation. This is the author's classification for critical analysis of design, and not a scientifically established list of the causes of gaming disorder. Assess context, audience, voluntariness of participation, and opportunity to stop."}],"relations":[],"placements":[{"catalogId":"engagement-retention","id":"family-07","title":"Engagement, retention and addictive patterns","url":"https://gamemechanics.pro/en/mechanics/engagement-retention/#family-07","categoryIds":["section-1"]}],"supersededBy":[],"attributes":{"preview":{"updatedAt":"2026-10-22","title":"Loot and collecting","description":"Loot fills a set of items and creates long-term goals. Rarity and an incomplete collection affect the value of the next find.","image":{"src":"images/mechanics/rpg-vampire-survivors-05.webp","width":1280,"height":800,"game":"Vampire Survivors","sourceUrl":"https://store.steampowered.com/app/1794680/","originalUrl":"https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1794680/ss_bea7831ae00c044d9cd31c3f8e0fee766b4fe1c6.1920x1080.jpg?t=1787911678","credit":"poncle / poncle","rights":"© poncle / poncle. All rights reserved.","caption":"The collection contains 124 of 127 entries","alt":"The collection contains 124 of 127 entries","markers":[{"x":53,"y":15,"label":"The counter and empty slots show the remaining collection goal"}]},"tips":["Show acquisition methods and collection limits."],"examples":[{"title":"Vampire Survivors","url":"https://store.steampowered.com/app/1794680/"}]}},"endsAt":null,"provenance":"Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review.","license":"CC-BY-4.0","codeLicense":"MIT","attribution":"gamemechanics.pro contributors","catalogKey":"catalog/engagement-retention"}}