Based on 'LonelyVoxel' by SudoNhim and ported by JiPi. A cube with rounded corners and a very nice bump map.
He is still lonely the voxel. But underlaid with some music in a little intro and you have a sociable composition. A possible extension would be to provide the six sides with different textures. The animation of the texture relative to the movement of the cube is particularly effective.
Have fun playing
One way of including a gif anim ...
... and the other way ...
... we'll have to see what's the advantage of one variant over the other?!?