Most multiplayer games still have sizeable luck component, at least when considering the results of a single game, because game designers found that having an e

Most multiplayer games still have sizeable luck component, at least when considering the results of a single game, because game designers found that having an element of randomness makes the game massively addictive because it forces players to play the game for longer to get a reward, trudging through losses or mediocre results in order to finally win a victory or two and be able to go to bed happy. In League of Legends the other team might pick characters that just wreck your team's. In SC2 your opponent could blindly pick a strat that counters yours 90% of the time. And anyway in most ranked games you're matched up with people of equal skill (via ELO systems), so there's an emergent tendency to win/lose ~50% of the time. Even though the result is determined by skill, it's still basically a coin toss who wins :-) Don't even get me started on Hearthstone.