War Robots on android. It is a fucking pay2win game, but you can obtain the same features shoppers do with patience, lots of patience.
The game is pretty simple, five control points and massive firepower to hold them.
As an ex-wot player I'm a winner at tactics, and that led me to quickly climb leagues. Because of that now I'm encountering long time players with exotic weapons and mechs that are ripping me off, but I'm still managing to get kills and win matches. Sooner or later I'll start to lose because of disparity on equipment.