Choose a game
Two games on one board. The rules are the same in both, and so is the opponent; in one of them, a piece can leave.
Three dimensions
Oblique 3D
The lattice as it is. Nothing is hidden and nothing is left to chance. Every piece is on the board, every line of attack can be read off it, and the only thing that moves a piece is a decision. Play in 3D Four dimensionsOblique 4D
The same lattice, and a way off it. Every rule of Oblique, plus rifts. A piece can leave the board for a few turns and land somewhere new — and the turn it lands on is played with it. Play in 4DBoth run in your browser: no account, no install, no network after the page loads. New to the game? The rules take five minutes, and the weakest opponent gives pieces away.