Mystery IQ Test
You wake up in a strange room with no idea how you got there or what is going on. The only clue is a note telling you to use your brain to unlock the next 30 rooms, so you trundle off through the door, thus starting your Mystery IQ Test, a puzzle game by Entertainment Forge. Use the [arrow] keys to move and [spacebar] to interact with objects. There are three difficulty levels with different point systems, but no timer, so you can relax and try to figure out the puzzles at your leisure. However, you start with an IQ of 80 and the number can go up or down, depending on your performance – solving puzzles without hints awards more points, and you forfeit a whole bunch of them if you ask to be shown the solution.
The level design is simple, clean and friendly. The puzzles are varied and will exercise your linguistic, spatial and logical intelligence, which means they stay interesting and stimulating throughout the game. They are a little on the easy side, though, so you might want to choose the highest difficulty straight away. In any case, one good thing about a game which claims to measure your IQ is that you have a strong urge to beat it; every solved puzzle feels like a tiny victory, and you finish it with a smug smile. That'll show those elitists at Mensa who didn't want to let you in their silly club!