Question: what games exercise your brain?
Answer: Lumosity. Free in the iOS Store and Android Play Store, Lumosity offers an ever-expanding set of cognitive and scientific games designed to improve your working memory and stimulate your brain on a daily basis. ... 
Dakim. ... 
Clevermind. ... 
Fit Brains Trainer. ... 
Brain Fitness. ... 
Brain Trainer. ... 
Brain Metrix. ... 
Eidetic.