Are there any mobile games that are as fun to play as league of legends?

I am still kind of an infant when it comes to mobile games. When I do play games it is still almost always on my computer with either swtor or league of legends, and the occasional mass effect when they hit and the like.

My question is for those of you who play and enjoy both league of legends AND mobile games for either smartphones or tablets (of either platform).

And here is the question, have any of you ever found a mobile game that you enjoyed more than league of legends? A game where if it came to choosing to never play one or the other, league of legends would be cut off forever?

I have played a small pocket of mobile games but I have yet to find a truly engrossing game or one that was as much jump in and have fun as lol. So please enlighten me.