{"schemaVersion":1,"record":{"key":"mechanic/phone-motion--family-social","type":"mechanic","id":"phone-motion--family-social","lang":"en","title":"Co-op play and multiple devices","summary":"Players take different roles: one holds the phone and others give clues. Heads Up! hides the word from its holder and accepts a tilt to confirm it.","updatedAt":"2026-10-22","status":"active","url":"https://gamemechanics.pro/en/knowledge/mechanic/phone-motion--family-social/","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/mechanic/phone-motion--family-social.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/mechanic/phone-motion--family-social.md","aliases":[],"tags":["Phone motion interactions","Mechanics catalog"],"sourceIds":["source-52e48502e240574e"],"sources":[{"id":"source-52e48502e240574e","title":"Heads Up!","url":"https://apps.apple.com/us/app/heads-up/id623592465?uo=4","verifiedAt":null}],"sections":[{"id":"principle","title":"How it works","body":"A rule connects the movements of several participants. Network coincidence of events is not evidence of physical contact between phones."},{"id":"variants","title":"Variants","body":"### Variants and applications\n\n<a id=\"family-social-variants\"></a>\n\n- Synchronized movement of several players. Action: Devices compare the moments or form of movements. Application: Common musical blow, joint opening of a door, command spell. Sensors: Name: Motion + connection; Meaning: A network connects devices; specific sensors depend on the selected gesture. Limitations: Requires network, time synchronization and latency tolerance; sensors are selected according to the... <a id=\"variant-m081\"></a>\n- Complementary or counter movements. Action: Success depends on the ratio of the slopes, and not the coincidence of each individually. Application: Counter levers, general balance, cooperative flight, kinetic puzzle. Sensors: Name: Motion + connection; Meaning: A network connects devices; specific sensors depend on the selected gesture. Limitations: Define a general directional system in advance; “Left” may differ on different screens. <a id=\"variant-m082\"></a>\n- Event relay. Action: Each participant must perform a movement after the previous one. Application: Rhythmic chain, energy transfer, command sequence, orchestra. Sensors: Name: Motion + connection; Meaning: A network connects devices; specific sensors depend on the selected gesture. Limitations: Transmit step number and time; the network should not generate repeated execution. <a id=\"variant-m083\"></a>\n- One phone is like a fragile relay baton. Action: Participants pass the device while maintaining the specified stability. Application: Transfer of a virtual cup, sleeping creature, unstable bomb. Sensors: Name: Accelerometer + gyroscope; Meaning: A bunch of sensors for orientation, rotation, and separating motion from gravity. Limitations: Transmission between people cannot be reliably determined by a single accelerometer; confirm by touch or round rule. <a id=\"variant-m084\"></a>\n- Hidden screen and reply gesture. Action: The screen is visible to other players, the owner responds with discernible tilts. Application: Charades at the forehead, word guessing, quiz with hidden information. Sensors: Name: Accelerometer; Value: Sufficient for the specified simplified scenario under the described conditions. Limitations: Do not force the player to see the screen; confirm the action with sound or vibration. <a id=\"variant-m085\"></a>\n- Asymmetric cooperation. Action: One participant sees the target or instructions, the other controls the movement. Application: Sapper with an instructor, navigator and pilot, carrying cargo according to prompts. Sensors: Name: Accelerometer; Value: Sufficient for the specified simplified scenario under the described conditions. Limitations: Can be played with one phone; clear commands and feedback are needed for both roles. <a id=\"variant-m086\"></a>\n- Phone as a remote motion controller. Action: Device signals control the game on another screen. Application: Computer steering wheel, presentation remote, general TV screen, music controller. Sensors: Name: Motion + connection; Meaning: A network connects devices; specific sensors depend on the selected gesture. Limitations: Requires connection and delay handling; do not transmit more sensory data than required by the control. <a id=\"variant-m087\"></a>\n- Symbolic transfer of a virtual object. Action: Participants perform a coordinated gesture of sending and receiving. Application: Pour a drink between screens, pass a card, transfer a game resource. Sensors: Name: Motion + connection; Meaning: A network connects devices; specific sensors depend on the selected gesture. Limitations: The recipient is determined by the connection or explicit choice; coincident jerks do not prove the proximity or contact of phones. <a id=\"variant-m088\"></a>"},{"id":"context","title":"Context and limits","body":"96 mechanics and scenarios; Basic gestures, control schemes and derived applications are separated into layers. Examples are design ideas other than individually confirmed products."}],"relations":[],"placements":[{"catalogId":"phone-motion","id":"family-social","title":"Phone motion interactions","url":"https://gamemechanics.pro/en/mechanics/phone-motion/#family-social","categoryIds":["section-1"]}],"supersededBy":[],"attributes":{"preview":{"updatedAt":"2026-10-22","title":"Co-op play and multiple devices","description":"Players take different roles: one holds the phone and others give clues. Heads Up! hides the word from its holder and accepts a tilt to confirm it.","image":{"src":"images/mechanics/touch-heads-up-0.webp","width":665,"height":1440,"crop":{"x":0,"y":314,"width":665,"height":923},"game":"Heads Up!","sourceUrl":"https://apps.apple.com/us/app/heads-up/id623592465?uo=4","originalUrl":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1d/00/4b/1d004bc2-47ac-fb70-1eb9-d42e1a2f1c80/Screen1.jpg/720x1560bb.jpg","credit":"Warner Bros.","rights":"© Warner Bros.. Developer-distributed app screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.","caption":"Heads Up!: friends see the word while the phone’s holder receives clues","alt":"Heads Up!: friends see the word while the phone’s holder receives clues","markers":[{"x":67,"y":30,"label":"The forehead word is visible to others but not the holder"}]},"tips":["Confirm results through sound or touch when the screen is hidden from the player."],"examples":[{"title":"Heads Up!","url":"https://apps.apple.com/us/app/heads-up/id623592465?uo=4"}]}},"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/phone-motion"}}