It's projective hex! Invented by Bill Taylor.
Most models generated by polyHédronisme.

Mouse drag or Shift + Arrows: Rotate
R: Red's turn
B: Blue's turn
Shift + Click: Reset tile
Shift + Z: Undo last move
Shift + X: Redo last move
Shift + Q: Randomize board
Shift + W: Reset board
Shift + R: Back to main menu

This polyhedron represents a tiling of RP2; opposite faces are identified. You win if your color contains a non-contractible loop.

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