My Favourite Game~ Ragnarok

Ragnarok Online, often referred to as RO, is a massively multiplayer online role-playing game or MMORPG. Based on the manhwa Ragnarok by Lee Myung-jin. It was first released in South Korea on 31 August 2001 for Microsoft Windows and has been released in many other local around the world. Much of the game's mythos is based on Norse mythology, but its style and settings have been influenced by a wide variety of international cultures. Player characters interact in a 3D environment but are represented by 2D character sprites for front, back, side and diagonal facings.
Ragnarok Online is divided into a series of maps, each of which has its own terrain and native monsters, though many monsters are present in multiple regions. Transportation between maps requires loading the new map and monsters cannot travel from one map to another.
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 game play 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