if you're a MOBA fan this is your game
Although what i think it separates itself from others is the champion creativity and its in-game items....
The game is addictive even though a little repetitive but the amount of unlockable content makes it worthwhile
Plus your garanteed to have different matchs with every new game cause no one usually sticks to the same champion
Now while might some claim that its a DOTA rip-off, DOTA 2 and HoN is better, tell them to stfu. While is true that having everything unlocked from start is fun, it doesnt last long.....
Making you earn every champion you play, masteries and runes feels sweeter and challenges you to get even more
Now being constantly patched and added content , plus being completely free.... No there's no pay to win here, money simply unlocks stuff faster than you would by playing normally and gives you cosmetic stuff so no difference between you and Bill Gates sized wallet player (except he looks better and lives better)
I believe this game is here to stay for a long while.