Elevator is a 3D chess game played upon 2x2 platforms called Elevators, in four levels of 4x4 arrays. The levels are arranged so that three Elevators and one empty space make up an Elevator Shaft. Viable Elevator platforms are denoted by the small yellow dot at their center. Vacant Elevator Shafts are denoted by the blue square at their center.
 
Starting with the White, each player moves either a piece or an Elevator. No piece may occupy the cell of a vacant Elevator Shaft.
 
To move an Elevator, the player must have control. Control consist of at least one occupying piece, and more pieces than the opponent. Elevators and occupants are moved up or down one€Vöel with the yellow dot.

• The Pawn(P) may step without capturing either one forward, left or right orthogonal. It may step two forward orthogonal from its first or second rank, provided that both cells are vacant. It captures one forward diagonal, and en passant is legal. It may promote to any previously captured piece on the second-to-last or last rank. Changes levels via Elevator.
• The Flying Rook(R) slides orthogonal. It cannot leap over pieces or an empty Elevator Shaft. But it can change level once, either up or down, when it encounters an empty Elevator Shaft, and continue moving with the usual restrictions. May also change levels via Elevator.
• The Flying Bishop(B) slides diagonal. It cannot leap over pieces or an empty Elevator Shaft. But it can change level once, either up or down, when it encounters an empty Elevator Shaft, and continue moving with the usual restrictions. May also change levels via Elevator.
• The Walking Knight(N) leaps two orthogonal then one perpendicular orthogonal. This leap may be over an empty Elevator Shaft. It also steps one orthogonal. Changes levels via Elevator.
• The Walking Camel(C) leaps three orthogonal then one perpendicular orthogonal. This leap may be over an empty Elevator Shaft. It also steps one orthogonal. Changes levels via Elevator.
• The Ox(O) leaps without capturing two orthogonal then one perpedicular orthogonal or two orthogonal or two diagonal. These leaps may be over an empty Elevator Shaft. It is able to capture by stepping one diagonal. It can push pieces, both friend and enemy, one or two cells orthogonal, provided the first piece is adjacent. It may push several pieces in a row. When pushing two orthogonal, a hole may be consolidated. If pieces are pushed off the board or into an empty Elevator Shaft, they are captured, whether friend or enemy. It cannot push another Ox. Changes levels via Elevator.
• The Vaulting Prince(I) steps one orthogonal or diagonal. It leaps without capturing three orthogonal or diagonal. This leap may be over an empty Elevator Shaft. Changes levels via Elevator.
• The Flying Queen(Q) combines the powers of the Flying Rook and Flying Bishop. Changes levels via Elevator.
• The King(K) steps one orthogonal or diagonal. Changes levels via Elevator.