A downloadable game for Windows
Ortho wanted to make a simple game around hexagons. This took about 4 days to make.
You form a path from your starting tile to the exit, however, you cannot select a tile adjacent to the direction from which you came, or straight ahead. This leaves two directions: straight and to the left, and straight and to the right. You cannot revisit previously visited tiles, but you can jump over them one tile at a time.
In retrospect, these rules are pretty nonsensical and confusing, but I guess that's what tutorials are for :P