Gameplay.
Ragnarok Online is a massively multiplayer online role-playing game, where players can create several characters per account, but can only control one character at a time. Basic gameplay involves killing monsters wandering around the game world in order to gain experience and level up. This is referred to PvE combat. Players can accept optional quests from non-player characters for special rewards and to flesh out the game's fantasy world. An extended series of quests have to be completed for most job advancements. There is no main narrative, and players are free to explore the game world in a non-linear manner.