by g_rocket, published
Pentago is a game kind of like tic tac toe in which you try to make 4 in a row before your opponent, but with a bigger board and a twist -- you can rotate parts of the board! For more info about the game, see http://en.wikipedia.org/wiki/Pentago.
This is a pentago board.
print 1 base and 4 side pieces. buy (somewhere) 18 balls (~1cm diameter) in one color and another 18 in a different color.