It's not an mmo, it's a moba. It's a top down game where 5 people go against 5 with different champions with different abilities. There's two sides to the argument on whether you should start. Yes because it's a fun game that you won't be able to get enough of and there is a lot of work coming from riot to build a cool universe around it. Also no because you could get severely addicted to this game, and super frustrated with balance at times.