Mentaloid is based on a game called arkanoid. However its almost completely different.
There are 5 levels on this version. The full version can be seen on Mentaleak.com
The full version has 10 levels and was made so that i can pick and choose levels designed and submitted by the players and add them in.
Like everything else, in order to play the full version you first need to make 10 posts on the Mentaleak forums. Aside from that its completely free