Interesting / cool little game. I think it makes my brain hurt ...
Someone mentioned the math game, so I also played it. It doesn't seem to adapt or modify itself based on correct / incorrect responses like the circle game.
Since there were 2 games, I looked at some of the others. The one with the colored squares is easy / fun to play - but like the math game, doesn't seem to adapt to correct / incorrect responses. The other games weren't intuitive (at least for me) and some seemed to require knowledge of Japanese.
Quick question - for those who scored in the 20's with the circle game on their 1st few tries (aka - no significant practice) - do you play video games - and if so - roughly how many hours per week?
Jim - cool site. Thanks for sharing.