I don't play a lot of mobile games, but this one caught me eye randomly on the internet one day. I truthfully have no idea how I discovered this game, but I really like it! There's high amounts of strategy and thought that go into the game and you can anticipate and counter your opponents moves.
Some of the game feels a bit unfair when my opponents have stronger towers and champions than me, but I chalk that up to them just playing more. Or perhaps they use a credit card!
Either way, I'm enjoying the game a ton and would recommend it to pretty much anyone.