Net Y is an acronym for Nested Tetrahedrons Y. There are three superimposed, interdependent instances of Y which are played simultaneously. Two of the grids are imprinted on tetrahedral shapes, and one is imprinted on a simple triangle. The winner of the majority of the three wins overall.
Net Y rule sheet:
http://www.marksteeregames.com/Net_Y_rules.pdf
Net Y printable game board:
http://www.marksteeregames.com/Net_Y_board.pdf
