Heya all,
I know some people were finding it difficult to find practice cube tests (me included) and I just found this game so I thought I'd share
It's not quite cubes, but it is spacial reasoning. The website has lots of other interesting games too. You have to register to play, but it only takes a couple of seconds.
http://www.lumosity.com/brain-games/...otation-matrix
Hope it helps!