I would recommend sticking with the Playstore whenever you can. As far as playing it, go for it!

I would highly recommend Clash of Clans and Starwars Commander for Android.

Clash of Clans

https://play.google.com/store/apps/details?id=com.supercell.clashofclans

Starwars Commander

https://play.google.com/store/apps/details?id=com.lucasarts.starts_goo