What that game did for math/problem solving, this one does for memory... and dammit it's frustrating knowing that 10+ is hard to get right. (I feel old!)
http://www.lumosity.com/brain-games/memory-games/memory-matrix
more here: http://www.lumosity.com/brain-games/
one of the more fun ones is all about FOCUS: http://www.lumosity.com/brain-games/attention-games/lost-in-migration
^ for LiM my personal best = 1700, reaction time 1156ms, 100% accuracy, 38 correct (in 45 seconds)
Never played Raindrops until today. I think I'll make my kids do that.
I got to 13 tiles in the memory game, but missed one. So really, I accurately remembered 12.