Polysquares Pro is like the classic falling-block game, Tetris, but with one huge difference: Nothing falls. Instead of testing your hand-to-eye coordination and ability to think at speed, Polysquares encourages deep, slow thinking and a leave-the-reflexes-to-the-youngsters attitude. The aim in this seductive little game is to line up a series of interlocking blocks.Get enough blocks in a group and they disappear, scoring you points. There are roughly three zillion options available, so you can alter the game to suit your mood or your synapse strength. There's no installation program for this one. Download it and unzip it to its own folder, then run the PSP application.