RelativityX
Fly a near-light-speed spacecraft through the solar system and watch time stretch.
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About the game
Fly a spacecraft through a 3D solar system with the keyboard.
Six speed modes, from subsonic toward light speed. Clickable planets with facts about each one. Free Camera option. Portal into a webring of other games.
Earth time and ship time read the same at low speed. Accelerate and watch them drift apart. Follow the route to the portal, or press Jump to Black Hole to skip the trip. Snap Back returns you to the solar system.
cng13m built it after watching Interstellar, wanting players to experience time dilation for themselves.
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It ranks #422 of 588 games all-time, going by its jam placement until players rate it. How rankings work
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How it was made
Source: Vibe Jam 2026 submission form. Evidence: the creator's own account.
- Added
- Code by AI
- Most of it
- AI provider
- OpenAI
- AI tools
- Codex
- Engine
- Three.js
- Genre
Simulation, 
Educational- Players
- Single player
- Jam
- 2026 Vibe Coding Game Jam, rank 411 of 945
Controls
- Keyboard
- W / S forward / back
- A / D turn
- Space / Shift up / down
- Q / E roll
- 1-6 speed mode
Screenshots
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