Minecraft, but you're a Viltrumite (Final Version)Data Packs
Minecrafter

The pack adds 11 additional dimensions to the game as well as customized mob spawning, playable fantasy species, and tons of custom structures!
Type in the command, "/function bracken:config," to open up a bunch of configuration options that enable/disable certain pack features, as well as accommodate packs that make the nether taller.
WARNING: Realms and plugins like Spigot and Paper don't work well with extra-dimensional packs like this one. Common issues include dimensions not loading or teleporting back to the overworld when trying to dimension hop.
Deleting a pack from your saves folder after loading and playing on a world will cause the world to be unplayable unless the pack is reequipped. This also occurs if the "/datapack disable" command is used. Never hurts to back up your world just in case!
If you wish to uninstall the pack, not only will you have to remove the data pack, but also the dimension files, and edit the level.data files.