Java Edition:Cross World Commands
Cross World Commands, or CWC for short, is the most overpowered technique on this wiki which does not modify the game itself, but it comes with the drawback of potentially crashing Minecraft or even corrupting the world. This method allows commands to be executed in one world, and when switching to another world, those commands are still running causing them to execute in the second world. This is done by creating a clock and a large amount of lag, then switching worlds. This only works in singleplayer, and can be done from 12w32a (1.4 Snapshot) to 15w31c (1.9 Snapshot).
Using
All of the methods used for Cross World Commands involve causing large amounts of lag before switching worlds, this is a dangerous method so back up your world before attempting. Below is a list of resource which either help explain Cross World Commands in more depth, provide a world download for this method, or are command generators to assist the player in using commands in these old versions.
Videos:
- Ulfyn
- PuffingFish HQ
- Exploit4ever
- Sancarn
- Tamacraft
- FavoritoHJS (Works Before /fill and /gamerule down to 12w32a (1.4 Snapshot))
World Downloads:
Command Generators for 1.8-1.10:
Uses
Items which were added after 1.8 can be obtained by creating a chest with a BlockEntityTag.Items tag, this will allow the chest to hold items, even items which have not been added to the game yet. The player must wait until these are added to place the chest, if the chest is placed prior to the item being added it could be deleted. This can also be used for any block by creating a block item with a custom BlockEntityTag, and an entity by creating spawn eggs with a custom EntityTag.