This app was mentioned in 2 comments, with an average of 2.50 upvotes
The screen is kinda like this, but the character design and art is way different. It's a typical mobile game with a joystick at the left and buttons for attack and other abilities at the right side. I think you start off in a tutorial with 6 or 8 abilities, all with basically zero cool down. https://play.google.com/store/apps/details?id=com.redantz.game.zombie