From MG Software:
This is a one or two player strategy game with five levels to complete. To win a level, you must be the first to tunnel out of the mountain or trap your opponent. There are three degrees of difficulty if you play against the computer. You can also choose to play against your friend. This game is a lot of fun when playing against a human opponent.The mountain is made up of a gridwork of blocks. A block can be open on the top, bottom, left, or right or any combination of directions. Your job is to place the blocks in a way that creates a path to the exit. You can also place blocks that interfere with your opponents way out. But beware, if your opponent places a block that traps you in the mountain -> you lose!