Controls: Blue: WASD, Z to fire Blue: YGHJ, X to fire Blue: IJKL, C to fire Blue: Arrow Keys, V to fire Each of the different players shoots different things. Fire at the white circles. Blue has a fast-firing attack. Red has a medium-attacking shotgun attack. Green has a snail-speed strong-attack attack. Yello has a fast-firing attack that follows the mouse cursor.
With the extra hour, I just polished it. I think I could've made the same game but worse if I didn't have that extra hour.