Tutorial:Ultra hardcore survival

If you have played Hardcore mode many times and are comfortable with it, and want an even bigger challenge, try Ultra Hardcore Mode (UHc). Ultra Hardcore mode is like the classic Hardcore, but the player cannot naturally regenerate health. Instead, you must rely on methods such as Regeneration.

All the rules of regular Hardcore still apply, so read them first.

Click Create new world and set the gamemode to Hardcore. Next, click game rules, and scroll down until you see Natural regeneration, now set it to false. Once you have done that, click Create world. Now you have successfully created your own Ultra Hardcore world.