Inventor: Udo Krell in 1981.
Release: 1983 (Uwe Mèffert, Hong Kong)
Possible combinations: ~ 2.83 x 1074 (estimative of all uranium atoms in the observable universe: ~ 2 x 1074)
Instructions:
To rotate the entire cube in space, simply click and drag on the gray background using your mouse or your finger if you're using a touchscreen device.
To rotate specific layers of the cube, click and drag on the facelets of the desired layer in the direction you want to rotate it.
App source: animcubejs.cubing.net/animcubejs.html