Tandemonium
A party-physics game on a tandem bicycle. Ride solo or with a partner — pedal, steer, and navigate to your destination before time runs out!
Toggles
Leaderboard — View top scores for the current level
Profile — Sign in with Google to save scores
ALL
All — Enable or disable all permissions at once
Video — Share your camera for the ride
Audio — Share your microphone for voice chat
Joystick — Steer with gamepad left stick (appears when controller connected)
Controller Gyro — Lean controller to steer. Press L3 to recalibrate
Phone Motion — Tilt your phone to steer. Tap screen to recalibrate
Music — Toggle background music on/off
?
Help — This help screen
Learn to Ride
Practice pedaling and steering with any input. The tutorial adapts to your active controller:
⌨️
Keyboard — Steer with A/D. Pedal with Left/Right arrows
🕹️
Joystick — Steer with left stick. Pedal with L1/R1 or L2/R2. Both together to brake
🎮
Controller Gyro — Lean to steer. Pedal with L1/R1 or L2/R2. Both together to brake. L3 to recalibrate
📱
Phone Motion — Tilt to steer. Tap the left and right pedals to ride. Both together to brake. Tap center to recalibrate
Achievements
- 👟First 500m — Ride 500 meters
- 🏅1K Club — Ride 1,000 meters
- 🏆5K Champion — Ride 5,000 meters
- ⚡Speed Demon — Hit 50 km/h
- 🤝Perfect Sync — 10 seconds of coordinated pedaling
- 🌟Collector — Grab 10 collectibles in a run
- 👑Hoarder — Grab every collectible in a level
- 🏠Home Sweet Home — Finish Grandma's House
- 🏰Royal Arrival — Finish The Castle
- 🚲Grandma's Classic — Finish Grandma's on the default bike
- 🍊Marmalade Delivery — Finish Grandma's on the orange bike
- 🫐Berry Special Visit — Finish Grandma's on the magenta bike
- 🍒Cherry on Top — Finish Grandma's on the red bike
- 🌊Ocean to Grandma's — Finish Grandma's on the blue bike
- 🌿Jungle Express — Finish Grandma's on the green bike
- 🍌Banana Delivery — Finish Grandma's on the yellow bike
- 💮Flawless — Finish Grandma's House with no crashes or restarts
- 💎Untouchable — Finish The Castle with no crashes or restarts
- 🤜Team Player — Stay safe 80% of a multiplayer ride
