DLR Cube Rotation

The DLR was assigned to develop a system for selecting the future pilots. Since 1954 practically every Lufthansa pilot has been selected by the DLR and the success rate of pilot training has justified the effort: more than 97% percent of the ab initio applicants succeed in their pilot training.
DLR Test is used by many major airlines to handpick skilled pilots.

With this module you can practice cube rotation anytime you want. 
Your task is simply to imagine a cube with a "X" mark on it, and rotate the cube mentally according to given acoustical commands.