This app was mentioned in 2 comments, with an average of 1.00 upvote
Ok so this is published by Nexon, I KNOW that everyone hate them but they don't actually ruin every game they touch (Mabinogi Duel is a great example).
This game is quite fun, only pvp, controls are pretty good and it doesn't seem to be p2w.
If you like pvp, arena battles and MOBA, give it a try!
Also I probably srew up the link so try this one https://play.google.com/store/apps/details?id=com.nexon.am&hl=fr