Collapsar io is a browser multiplayer space evolution game where you start as a tiny asteroid, gain mass, grow planets and civilizations, then turn the whole system into something much bigger.

How to play

The first minutes are mostly about mass. Merge with smaller rocks, stay away from bodies that are clearly too large, and reach the planet stage. A stable planet with enough mass can develop life, fleets and shields. From there the game gets less like a simple grow-big arena and more like managing a weird little solar system.

At 180 mass your planet can become a star. Collapsar io then opens research, shared fleets and systems with several stars. Keeping living planets around is often more useful than absorbing everything instantly, because they provide research and energy. Homegrown stars matter as well: some late technologies cannot be unlocked just by capturing somebody else's star. Eventually stars can evolve into pulsars and black holes, while one million mass starts a new universal cycle.

Tips

• Capture asteroids with a sideways flyby instead of charging straight at them
• Keep useful living planets when you need research or energy
• Grow your own stars if you want access to late technologies

Controls

• WASD / arrows move
• Space boost or absorb
• E release selected satellite
• Ctrl / L absorb all asteroids
• [ / ] select planet
• Shift / J absorb selected planet
• B transfer mass to selected planet
• F activate system drive
• T phase jump
• Q spatial anchor
• Mouse wheel / + / − zoom