Piglin has 3 worlds. You can see which world you are in with the command /coords or /asb toggle.

• spawn: This is in the main world you go to when you type /warp spawn. You can not build here.

• world: This is the main build world. This world does not reset. You can visit this world by using the command /rtp.

• world_nether: This is the main nether world. This world does not reset. You can visit this world by using the command /warp nether or the command /rtp nether.

• world_the_end: This is the main end world. This world does not reset. You can visit this world by using the command /warp end or the command /rtp end.