i downloaded street fighter 2 on my wii so i've just been playing that shit
i downloaded street fighter 2 alpha and was playing that until i started getting a blister on my thumb and figured it's probably not worth relearning. hella fun though.
also got this one today, if you like fighting game mechanics it's pretty good its your run of the mill, rediculously violent, hack n slash. good fun.
and then for something a bit more mellow on action but intense on problem solving i downloaded this 10 dollar puzzel game
it's great fun. it's basically a game made out of Mc Escher type of perspective art where you create connections between the paths, hide obsticles, etc... by rotating the prespective and allowing the walking guy to make it too the next shadow guy. hard at first but pretty fun.