This app was mentioned in 5 comments, with an average of 1.40 upvotes
I've been really enjoying Crasher, it recently came out, less than a month ago. It has very limited P2W features, but is a very grindy Korean style MMO. It has the stupid auto play feature so you can just AFK grind. This usually turns me off a game but the PVP and coop features are amazing.
I would suggest AFK questing till level 30 then the actual game starts when you can get into the Resource War. This is dungeon with 10 bosses and 50+ players from many guilds all fighting against each other and the bosses trying to get to most damage or last hit on a boss to get the rewards while fighting off the other guilds. It is by far the most interesting PVP game play I've seen on mobile. These wars happen twice everyday for 30 minutes and offer great rewards. There is also small PVP with 1v1 3v3 and 5v5, all of which are very skill based and fun.
If you do give it a try make sure to capture a mine as soon as possible to greatly increase your offline progression. Also enhance your gear as soon as you get enhance stones because it improves the gear slot not the actual piece of gear so you don't lose the effects when you get a better piece of gear.
Crasher. Just left closed beta and by the looks of things they went straight into open beta.
Stupid bot.
https://play.google.com/store/apps/details?id=com.qjzs.an.en4399
Servers might still only be Oceanic. Probably will be opened later for everyone.
crasher is English Language now
https://play.google.com/store/apps/details?id=com.qjzs.an.en4399
also HIT from nexon is nice
https://play.google.com/store/apps/details?id=com.nexon.hit.global
or
Lineage War
https://play.google.com/store/apps/details?id=com.enjoygame.ttwyen