PieceRelay

PieceRelay is a social party app with two game modes for groups where every player uses their own phone: PieceRelay and PanicRelay.
In PieceRelay, the app splits one image into as many parts as there are phones in the game. Each player solves their own fragment on their screen. Then everyone places their phones next to each other on the table and moves them until the fragments match. Once the layout is correct, a shared finale plays across all screens at the same time.
In PanicRelay, the game becomes a fast bomb relay. The active player solves a puzzle under time pressure, then passes the bomb to the next phone. Players place two phones edge to edge and drag the bomb from one screen to another before time runs out.
You need several Android phones, one per player, in the same room. The app must be installed on every phone and each device needs an internet connection. The game is not designed for playing on a single phone.
How PieceRelay works
The host creates a room, chooses an image, sets the timer, and selects the puzzle size.
Other players join by scanning the host’s QR code or entering the six-character room code.
Each player solves their assigned image fragment.
Players place their phones on the table so the fragments form one complete picture.
The app verifies the layout with arrows shown on touching phone edges.
After verification, the synchronized finale starts on all devices.
How PanicRelay works
The host creates a PanicRelay room and chooses the bomb settings.
Players join by QR code or room code.
The active player solves a puzzle before time runs out.
After solving, they pass the bomb to the next phone.
The next player catches the bomb from the screen edge and solves their part.
Once everyone has played, the app shows the finale or defuse code.
What the host can set
Game mode: PieceRelay or PanicRelay.
Image source: built-in catalog, gallery photo, or camera photo.
Time limit.
Puzzle difficulty, from 2x2 to 6x6 pieces per phone.
Finale text with text color, background color, and emoji.
Finale transition effect: blur, shatter, or explosion.
Optional finale video.
In PanicRelay: timer per player or for the whole game.
Team mode
Players can split into teams. In PieceRelay, each team solves its own image and the first team to finish wins the round. In PanicRelay, teams race to defuse the bomb. A match can have one, three, or five rounds.
No registration
The app does not require accounts or personal information. Game rooms expire automatically after about two hours.
Permissions
Photo and camera access is only needed when the host wants to use their own photo or video as game material. Selected files are uploaded to the game server so they can be displayed on the other players’ phones.
In-app purchases
Available for free: co-op group play, built-in catalog images, custom photos as puzzle images, and finale text with effects. A one-time purchase unlocks custom finale video and team mode. There is no subscription and no recurring fee.
The app is available in Polish and English.