When an enemy is hit with a projectile, the color of that projectile is subtractively mixed with its color. In order to kill an enemy, null its color to black.
The goal is to null any enemies to prevent them from reaching your orb (the flashy white thing) until time runs out. If more than 10 enemies reach your orb, you restart the level. The orb's health is indicated by its color, white is good, black is almost gone.
There's a friendly little ring around both your orb and the enemy spawns indicating how much time is left in a level. Keep in mind that the timer counts down to when enemies stop spawning, they still all have to be nulled for the level to be won.
Controls are explained in game, the only thing you need to know is that the original requires a middle mouse click to fire green, whereas the version marked "I have a cruddy mouse" will fire green if left and right click are both held down. I think this edit falls under the porting exception, but I don't want to push that.
Lastly, those three circles at the bottom of the screen show the RGB value of whatever your cursor is pointed at.
This is really great! Amazing use of the theme, the graphics were really nice and I find the color nulling mechanic to be pretty unique. Overall pretty darn good!
Terrific art style and great use of the theme. The camera zooming when you move was cool but a little jarring, but the platforming controls are quite good. Nice work!
Overall very nice little game ! Loved the fun and idea. It's a bit too easy, managed to finish 3 levels very easily. I love the dynamic created by the gameplay, but you can basically just spam both buttons and kill enemies easily. The colors blending all over the levels is looking very nice.
Little confusing at first so maybe could use a little more in-game explanation, felt like I needed a little more to keep me engaged while still on the learning curve. Very clever concept and graphically very pretty, well done.
Solid game, great mechanic. I really like the small touches you put on the paint effect in the world. However, the game would have benefited from either a faster pace, or some more audio to keep it engaging.
But it is a very nice use of the theme!