...should you choose to accept it...

If you've ever been bored while sitting at a computer, you've probably killed a few hours flipping over square tiles, hoping not to upturn a land mine. This polytopal variant pulls the old stand-by out of the plane and pushes it into the world of combinatorial spheres.

I especially like the dramatic "mission failed TRY AGAIN!!" and "mission completion!!" messages that close each level.