There is now also a penalty on the drop rates of monster if you are much higher level than the monster (this makes it harder to farm items using high level characters). Leveling on monsters 10 to 15 levels higher than your character is the optimal way to get experience now. Y ou must be within 5 levels of a monster's own level in order to receive 100% of their experience if they are lower than 5 levels then you receive less experience from them.
The damage algorithm has completely changed.Info about the different servers can be found here.
All existing accounts were moved to Ymir by default but you can pay to have your characters moved to different servers. I nternational Ragnarok Online (iRo) now has three servers Ymir (High population server F2P) and Valkyrie (high population F2P) and Yggdrasil (low population F2P).
They also have access to an NPC in the 'Eden Group' that awards a free +7 bonus to all stats for half an hour. VIP accounts have several benefits, including a x1.5 experience and monster drops multiplier.
The Renewal Update made dramatic changes to the game's design. The International version of the game was frequently updated but generally used the same mechanics, until October 2010 when Gravity implemented what they call the "Renewal Update". Ragnarok Online was originally released in 2002. More sections will be added as this guide is revised.