A 2 player 3D maze - see if you can sneak up behind the other player and press space to whack them for a point - you can only whack somebody from behind (so both players can use the space bar).
I have now hidden the players on the map, except when they are right next to each other.
It is possible for the players to end up on the same square and get stuck, if both move onto the same square at the same time. They can get unstuck by ensuring one is facing north/south and the other is facing east/west. THYANS TO 'CRATER