The color schemes on certain levels are too dark to be able to see the black spots clearly. For a fast-paced game, I shouldn't need to squint at the computer. 4/5
Agreed that the last boss is too hard too suddenly, but I love the concept. Good usage of the mouse direction to choose the colors. The art is nice, too.
Love the game. My only critique is that I wish there was more secondary explosions from the incoming missiles blowing up other missiles. This was a staple in the original.
Problems with the game:
1) No idea how close you are to the end of the level
2) Red and orange too similar
3) Levels are the same over and over
4) Music doesn't seem appropriate