Most of my stuff is practical, but, here are a couple of my favorites when I want to be entertained:
1. Prune....it's a game, very easy to play and once you start you won't be able to stop. Currently $3.99 and worth it!
2. Any Zen pinball game. I think you get 1 free table to checkout.
3. Google Play Books - Comic Books. There are generally some free ones available, for your creative side and to keep the kid in you alive!
Hope this helps.