Attempting to find perfect adaption of 2D into 3D. This is double in almost every respect of 2D chess.
 
Quadlevel 3D chess. Horizontal planes, are exactly the same as the 3D Verticle planes. IE. The c row pawn captures diagonally in regular chess to rows b and e, and that is also true in this variant, but added 3D it also captures c row on boards above and below. Easiest to learn of the 3D variants, no wild pieces, and intuitive (chess-like) movements.
 
In the Total 3D variant, full 3D motion is allowed.