Is it worth playing? I already spend too much time playing SC2...
If you have never played a Moba or League of Legends you will probably hate the game. The game is free to play but you have to unlock new playable champions by accumlating IP points from playing or shell out real money for RP points.
On top of that you have to grind your account level to 30 to be able to buy runes which let you customize your stats through the game, armor, health, armor penetration.
So by the time you get to level whatever you'll be playing against people with hundreds or thousands of games and get raaaaaaaaaaaaped, get yelled at, and reported for playing like shit.
The learning curve for Moba games are so much steeper than say Call of Duty. Oh cool 10 guns, 8 maps, got it.
League of Legends, close to 100 champions, ~100 rune setups, learning all the matchups like caster vs assassin, mage vs mage, carry and support, jungling, warding, last hitting, and on top of that something like 50-60 buyable items in game.
Just when you start getting the hang of the game, atleast 500-1000 games before you start knowing what you're doing keep in mind you have 4 teammates who can make or break the game in as early as the first 5 minutes by playing like shit.
SC2 is you vs another person so best man wins.
You can be fucking amazing at League and have some cunt go AFK at the start, next game some cunt dies twice decides to leave, next game everyone picks melee champs and loses their lane, next game cool story bro no jungler no you have to lane 2v1 and lose half your experience and fight for last hits, oh cool your carry bot gave up 6 kills in 10 minutes the enemy carry has the largest damage item in the game at 15 minutes.
Mobas man I fucking swear, Dota and Hon are the same way except when you die in those you lose gold and you stand no chance of coming back in most cases