Reaper
It is a good game. Its been out for years now. I downloaded it on my old phone and now just did it again on a newer phone a couple years later. I love defence games that are like this.
The only issue I have now is that the game crashes left and right on the arena. They say they are fixing it but it has been this way for awhile now.
Reaperjrl about
Empire Defense II, v3.7