You should try out any MOBA (Multiplayer Online Battle Arena), like League or DoTA, seriously, you might get confused or rage from time to time when you start, but once you get the hang of it you'll have a blast whenever you play it, also, you could wait for Warlords of Draenor, it seems like Blizzard will finally come up with a good expansion of WoW after BC =)
Blizzard is also coming out with a MOBA called "Heroes of the Storm"
Aura Kingdom just went into open beta 7 days ago and seems pretty decent (didn't get far, so not much of an opinion, yet)
I heard FF XIV was decent, but I don't play subscription games, so no opinion from me.
Dawngate is an upcoming MOBA that is pretty good, too.
C9 (Continent of the Ninth Seal), Dragon Nest, Warframe, Path of Exile, Smite, and Elsword are pretty decent.
All of these but FF XIV are F2P (not sure about Heroes of the Storm, but I think that's going to be F2P) and you don't have to buy the game, either, just download and play.
Heroes of the Storm will be F2P as far as I am corcerned yes. They want to follow Riot's LoL model business with that game and offer Skins and Mount Skins for Players to purchase and custom their Heroes.
You should try out any MOBA (Multiplayer Online Battle Arena), like League or DoTA, seriously, you might get confused or rage from time to time when you start, but once you get the hang of it you'll have a blast whenever you play it, also, you could wait for Warlords of Draenor, it seems like Blizzard will finally come up with a good expansion of WoW after BC =)
This . Most MOBA games are free to play without any of that pay to win bullshiet