First and foremost, LoL is free to play. That’s right, you can go download and play it for free right now. Not only is it free to play, you can earn all the champions and runes for free over time. So unlike other free to play games, you can actually enjoy all aspects of the game (from a competitive standpoint) without being tricked into spending money. However, if you like the game, you probably will shell out some cash so that you can grab a champion pack or some skins to make your champions look more mighty or goofy. Skins only change the aesthetics of your current champion so they are by no means required.