Tetris is an all time classic mental stimulation game crumpet………i don’t think it will ever be beaten in terms of sheer mental skill. It involves many things …focus, dexterity,spacial perception,fore -sight and well a slight bit of luck to be honest….LOL…..Perhaps in 20 years time, many people will still be citing Tetris as their number one mental skill game. I mean…this game is mentally challenging but it makes one think as well.
Interesting that the best ever designed game uses both hands and brain. (Throws away Sonic the Hedgehog cartridges) LOL