it thought this might make for an interesting game,
both players are white stone, placing one at a time. once an area is surrounded, any stones in that area that aren't surrounding an intersection or more are removed and counted as points, you also get the area itself as well, maybe put a paper with a 1 for player 1 capture, and 2 for player 2.

upon reflection, there should be some kind of maximum contiguous area you can control, maybe 25? what do you think?