Sol Arena
Our sun has shrunk to a white dwarf star. The solar system isn't big enough for all of the planets any more. Fight to be the last planet standing as the sun expends the last of its energy.
Aster Ring
An asteroid belt will force you out of the ring.
Alpha Centaurium
A binary star system closest to our solar system. The stars orbit each other and the rings shrink independently.
Black Holosseum
A star orbiting a black hole. Touching the singularity spells instant death.
Worm Holodrome
You can move and use wormholes to teleport yourself and other players/objects around the map.
Great Filter
You can't bounce off of the arena to survive, though you may be saved by the wormholes.
Explodrome
Bombs will explode if bounced, or on contact with planets when thrown. Explosions cause knockback, damage and stun.
Supernova Stadium
The star will grow and do damage when you touch it. After some time, it will explode in a supernova.
Orbital Portal
A wormhole pair orbits one star and teleports the other.
Singulari Trap
The black hole expands when devouring stars. You always bounce off of the orange ring. There is no escape.