Disco in Space is an arena shooter where you don't aim for the enemy but, for the walls.
In Disco in Space you can't hit your enemies by shooting at them. If your projectiles haven't hit the wall or another projectile, they can't damage the other player. But once you do hit something your projectiles won't only be able to hit the enemy player, but they can also hit you. In this game you have to be careful with every time you shoot, if you don't shoot right, you can kill yourself instead of the enemy.