--- 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 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 --- # Co-op play and multiple devices id: phone-motion--family-social type: mechanic key: mechanic/phone-motion--family-social lang: en status: active url: https://gamemechanics.pro/en/knowledge/mechanic/phone-motion--family-social/ 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. ## At a glance ![Heads Up!: friends see the word while the phone’s holder receives clues](https://gamemechanics.pro/images/mechanics/touch-heads-up-0.webp) [Heads Up!](https://apps.apple.com/us/app/heads-up/id623592465?uo=4) · © Warner Bros.. Developer-distributed app screenshot; all rights reserved. Excluded from MIT and CC BY 4.0. 1. The forehead word is visible to others but not the holder - Confirm results through sound or touch when the screen is hidden from the player. - [Heads Up!](https://apps.apple.com/us/app/heads-up/id623592465?uo=4) ## How it works A rule connects the movements of several participants. Network coincidence of events is not evidence of physical contact between phones. ## Variants ### Variants and applications - 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... - 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. - 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. - 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. - 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. - 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. - 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. - 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. ## Context and limits 96 mechanics and scenarios; Basic gestures, control schemes and derived applications are separated into layers. Examples are design ideas other than individually confirmed products. ## Connected materials ## Sources and 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. - [Heads Up!](https://apps.apple.com/us/app/heads-up/id623592465?uo=4) (id: source-52e48502e240574e) CC-BY-4.0 · gamemechanics.pro contributors