According to one group of brain doctors at the University of Michigan, at long last a mental exercise has been discovered that could really make you smarter. Literally, if the research is correct, the more you play and the harder you play it, the smarter you get.

The game is pretty simple in design: Players are presented with a computer screen that shows a pattern of squares. If the pattern matches the same one the player saw two patterns earlier, he pushes a button with one hand. At the same time, he has to listen to letters narrated over a set of headphones. If the letter matches the one said two letters earlier, he pushes a button with his other hand. The better the player does, the longer the interval stretches out: Three patterns and letters earlier, then four, and so on.

In tests, 20 minutes of daily training over a varying period of time led to "significantly" increased IQ vs. a control group, and the longer people played the game, the higher their IQ got. The study is of course contested for a variety of reasons: Primarily, that it was too small to be scientifically rigorous. But if it pans out, this is good news for people who want to improve their intelligence through video games, or at least help stave off the effects of old age with them.

Alas, the U-Mich game just doesn't sound like that much fun. But there are a ton of new games on the market that aim to help you improve logical thinking, reaction time, and coordination. If matching dots on a screen isn't your idea of a good time, check out one of these new titles:

Lumosity (Web)

This browser-based game offers about a dozen mini-games, each designed to help with one area of cognition, including memory, processing speed, attention span, and "cognitive control." Many games are surprisingly similar in design to the one in the Michigan study and some present a real challenge. ($9.95 a month, pictured)

Brain Challenge (Xbox Live Arcade)

Similar to Lumosity, this used to be a cell phone game that was ported to the Xbox. A series of mini-games asks you what comes next in a sequence of graphic designs, count items quickly, do basic math questions, and more. 30 types of rapid-fire games are available, and your progress is tracked by the game over time. (800 points)

Rocky & Bullwinkle (Xbox Live Arcade)

No, I wouldn't have expected a game based on a hapless cartoon duo to be good for the brain, but this set of WarioWare-like micro games are great for those looking to boost reaction time and improve eye-hand coordination. Nothing here is too complex (quick: click the correct button in the next 2 seconds!), but it's all good for working on the "twitch" reflex. (800 points)

Blokus Portable: Steambot Championship (PSP)

This challenging board game comes to the PSP, offering a grid in which you have to place your Tetris-like pieces in such a way that they touch only on their corners. It really works on your pattern recognition skills and gets exceptionally tough when playing with a group of four. ($20)

Wild Earth: African Safari (Wii)

No, it's not a brain game at all, but really little kids won't be able to manage the controls and strategies of most of the above titles. Still they shouldn't be left out of the fun. Wild Earth isn't exactly the most thrilling title on the market, but youngsters will enjoy looking at the animals on this virtual photo hunt while learning the names of all the beasts of the wild. Good for very small minds. ($30)