RGB

Rocks are red,

Papers are blue,

Scissors are green,

Game rules are a poem(?)

Everything with color can beat everything else with color (except your gun=)

This can be enemy vs enemy, bullet vs enemy, your own bullets vs you etc.

Switch your body color for defense and gun color for attack.

Just in case poem was a bit confusing, red beats green, green beats blue, blue beats red.

Controls :

A-D or Left Stick : move

Space or Button A : jump

J or Button B: Shoot

K or Button Y : Switch Gun Color

L or Button X : Switch Body Color

Alt+F4 : Quit Game