ParasiteBirth I always saw the game as a way to settle disputes between to hot headed friends.
There is no computer enemy in place. I didn't think it was necessary, the game is so simple in every way. It wouldn't be a hard feature to implement though. Being a 1 button game and all. But then again. It was designed so you could challenge a friend =)
Also, I have this kind of policy for myself; i decided I wouldn't spend energy revising a design for a game that already entered production. If new ideas come along the way, I save them for a future game. Right now I'm focused on experimenting and learning as I develop small, and hopefully fun and interesting games.
The next game I have in mind is a player vs cpu though =)