Luminosity - fun and smart games

Luminosity found here is a website and app that gives users a wide variety of games that are made to be challenging and fun. You need to sign up and after signing up they give you 3 baseline lests which consists of color matching, ability to focus, and memory. After getting the baseline tests done they show you a comparison of results. After the results are given they then make you sign up for any games past the three you were allowed to play for free.
There are a few games that are education such as language, however for the most part the games are meant to help build memory and attention skills. Prices are not terribly expensive if you purchase the membership for a year or longer and they build games and test the stats to help you improve your skills.