Gamespot has an interesting article up reviewing real life as though it were a MMOG. I don't know if their evaluation of race is appropriate, but for the most part its a cute look at what some gamers might be missing out on. Also, the results for the companion "Do You Like Real Life?" poll are currently 64% yes and 35% no.
I'm Mr. Mister. Watch your back, felons! When I get pissed, you get mist!
Somehow, I very seriously doubt that improving visual acuity is ever going to be a major selling point for a video game. Can't imagine picking up a PS2 game and seeing “Helps Improve Visual Attention!” on the box.