Me and my friend made a game in Unity 3D. We made it in 5 days, and lunched it. After 1 week it was like 400k downloads. Check it out, it's pritty addictive.
Google play:
https://play.google.com/store/apps/details?id=com.dm.timber
iOS:
https://itunes.apple.com/us/app/timberman/id871809581?ls=1&mt=8
Aaa and it's for free :)