Level 3 is . . .
Impossible. I have played this game for HOURS on end and the red just ALWAYS wins level 3. I'm getting a little bored of not being able to try the later rounds. Was fun until I found out you couldn't get further. Cut back the AI on red a little bit.
Otherwise good game
Good idea, very poorly done. Why is there no restart level button? It's frustrating to make the player sit there when they know they've lost and are sitting around waiting for the computer to win so they can try again...and then it goes and dumps me all the way back to level 1. The game is difficult enough to require experimentation on the player's part, yet you penalize them for trying to do so. Terrible game design.
The game's content is good enough that you won't need graphics, you could make a much better sequel by not screwing up how the game is set up. And I would like that.