Candy Crush http://www.candycrushsaga.com/

Two Dots http://weplaydots.com/twodots/

Lumosity http://www.lumosity.com/

Duolingo https://www.duolingo.com/

DragonBox Algebra http://www.dragonboxapp.com/

Feel Electric!

https://itunes.apple.com/us/app/feel-electric!/id463493101?mt=8