1) I need a way to create a world off of the main thread or at least the best way to load a world causing the least amount of lag for the players. I know that the Bukkit methods needed to do this aren't thread safe and they would just cause an error when I try to create a world asynchronously. I have already tried that just to see what error pops up and it also ends up locking the server up. I have also done a fair bit of google searching, this being one of them: bukkit create world async. However the answers weren't that clear or there was no direct answer on how it can be achieved. 2) Another option I would go for is using an API/Library. However I have failed to find one that allows async world creation. If anyone can point me to a link to one that would be great. 3) If I decide to do none of the options above, I would just create the world when the plugin loads and just copy it before I am going to use it. (because I don't want to edit the world directly, I want to keep an unused copy). Is this the best way to do it this way? Now I know there is a way to do any of these options. I have seen some servers that tell you when a world is being generated however I don't know what methods they use to achieve this. Any help on this would be greatly appreciated. EDIT: All of this needs to be done without restarting the server. Reloading the plugins though is still fine.