Studies show that games can help increase reaction time, teach logic, and expand spatial abilities. However, those qualities are usually veiled behind crawling through dungeons, shooting Nazis, and saving princesses. Not so with PQ: Practical Intelligence Quotient, the first release for D3Publisher of America. The PSP game has 100 3D puzzles that test gamers' logic by challenging them to move blocks, pull switches, and avoid obstacles. There are 13 different puzzle types to tease brains, and users can post their "PQs" online and see how they stack up against the rest of the world. The game was developed by Japanese company Nowproduction and retails for $29.99. Check back later today for GameSpot's full review.