0 km/h
0 m
🚲
CHECK POINT
🐌
TOO SLOW!
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YOU
0.0°
BIKE
0.0°
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Left Pedal
Right Pedal
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Left Pedal
Right Pedal
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Left Pedal
Right Pedal
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Tap to Start

Tandemonium

Party Physics Game on a Tandem Bicycle

Keyboard only!
Motion Steering
Stable Responsive

Users First (Games) v.ec1bcc3 | 07-25-2026 23:50

Tandemonium Actions

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
Attributions

"Tandem bicycle" by Sameer.Rayeen — licensed under CC BY 4.0.

"Krampus Workshop" by Kevin MacLeod (incompetech.com) — licensed under CC BY 4.0.

Goose calls (goose-honk.mp3) by freesound_community via Pixabay — Pixabay Content License (attribution not required; credited with thanks).

Thanks to The Central Ohio GameDev Group — for inspiration, friendship, and fun.

Immersive audio design based on the taxonomy in “A Taxonomy for Immersive Audio Techniques in Video Game Sound Design” by Alex Sallade (sallade.5@osu.edu, Ph.D. dissertation, The Ohio State University, 2024).

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
🎁
COLLECT
✅
← Stay on the road! →
Oops! Try again

You're ready to ride!

Steering Feel
Stable Responsive

YOU MADE IT!

🎮

Options

Graphics Quality
Some changes take effect on next restart
DualSense Input Source
Applied on next launch
Gyro Steering
Controller gyro only — applies immediately
Show Riders
Canadian-goose riders + front camera — applies immediately
FPS Display
Frame-rate readout, all modes — applies immediately