Colors

Each player in the game is assigned a color at the beginning of each match. This color is your identity: your ship, your HUD, and your attacks all share your color.  Incoming attacks have the color of the player who sent them.  This idea of color is identity is emphasized throughout the game.

This allows you to easily separate yourself from friendly and hostile objects.  If you see an unfamiliar color, either shoot at it or avoid it, because odds are it is hostile.  This helps simplify the chaos when the screen is filled with objects and lessens the confusion.

Not only is it functional but it defines the art style as well. Bright colors that contrast with a dark background along with the simple polygons give it the arcade look and the colored outlines give objects definition and attention.

Even better it allows you to trace that last missile that hit you back to its sender, so you can get revenge by dumping your arsenal into their wormhole.