Mental Blocks is essentially Tetris in 3D, similar to a better-known and superior game called Blockout. This is one of the rarest Accolade games, because the company was sued and later forced to pull the game from the market in a matter of months (probably due to too much similarities with Welltris, Spectrum Holobyte's 3D follow-up to Tetris that was being released around the same time).
Its unfortunate fate in the courtroom notwithstanding, Mental Blocks is a lot of fun and quite addictive, although the graphics are inferior to, and gameplay is not as smooth as, California Dreams' Blockout. Worth a look if you like Tetris clones, however. The game even has a decent AI that plays a pretty good game of Tetris all by itself in demo mode.
Review By HOTUD
English 
Comments and reviews
I got this game new for Christmas 1992, along with Scrabble, Magic Johnson basketball and some Virgin Interactive game that I don't remember the name of, all for MS-DOS. Spent hours on this game's two versions of Tetris and the 3d one managed to teach me spacial awareness.
I still replay it from time to time for the nostalgia factor, even if it might not be the best-regarded collection out there.
No comment nor review for this game at the moment.