Heh, fun!

>       This game require a terminal size of 21x81 pixel.
>       Your terminal size is: NxN.

It would be cool if a standard 80 columns display would be enough (as
some ports emulate on their console).

At least we should create a pkgsrc for this. You chose to license it as
GPL, so we can't put it in src/games (that would require a BSD styel license).

As a feature suggestion: I personally do like a demo mode of this kind of
games (in my young days lots of Novell file servers ran this as a screen
saver, just like Suns always played "Live")

Martin