Interesting take on the theme! :D Mario Ware style mini games are always fun.
Though sometimes it doesn't feel responsive, especially when the game doesn't end by itself when you got it correctly. Also you should not have to bring any outside knowledge into these games like the binary/decimal game. Couldn't figure out what to do there. The games should be self-explanatory and I think it shouldn't end after one wrong answer. At least in the 2 minutes mode I think it would be more interesting, if you get points or it counts how many games you were able to get right within that time limit.
Nonetheless a great game that is fun! :)