Undersphere
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About Undersphere
A multiplayer shooter fought on the inside of a sphere, where gravity shifts under your feet.
It won Vibe Jam 2026, Unique Concept.
A multiplayer shooter on a spherical world, where 'down' is always toward the planet's core. You carry an AK-47, a shotgun and grenades. Shotgun recoil and grenade blasts double as movement: experienced players launch themselves across the map with them.
A huge train circles the sphere and flattens anyone on the tracks. Kills restore health and earn coins for skins in the store. There are regular and gravity match types, with bots when servers are quiet.
How Undersphere was made with AI
The game's own credits list 'Gemini & Claude' under AI Development and Vite with Three.js as the engine. It was made for Vibe Jam 2026. Kenney's free models and Pixabay audio fill in the art and sound.
Made by Noah Whiteson (@_NoahWhiteson).
How to play
Press Play here to load Undersphere directly inside this page, or open it in a new tab for dedicated window focus. It supports touch controls on phones and tablets. Online multiplayer matchmaking is active.
| WASD | Move |
|---|---|
| Mouse | Look |
| Left click | Fire |
| 1 / 2 / 3 or wheel | Switch weapon |
| R | Reload |
| Gamepad | Supported |
| Touch joystick | Move and look on phones |
Quick facts
- Vibe Jam 2026: Unique Concept award
- Grenades follow the sphere’s gravity
Questions about Undersphere
Which AI tools built Undersphere?
The game's own credits list 'Gemini & Claude' under AI Development, with Vite and Three.js as the engine. It was made for Vibe Jam 2026, where it won the Unique Concept award.
What happens when servers are quiet?
Bots fill matches when servers are quiet, and there are both regular and gravity match types.
Is there a phone version?
Yes, touch joysticks handle movement and look on phones.
Tips for Undersphere
- Use shotgun recoil and grenade blasts as movement: experienced players launch themselves across the sphere with them.
- A huge train circles the sphere and flattens anyone on the tracks: listen for it before committing to a fight.
- Kills restore health and earn coins for skins, so aggression is also your sustain.
Sources: playundersphere.com, x.com. Last checked .
