The only way to switch an existing world to Hardcore mode is to use a third-party app to edit the game's files. How to change game modes in 'Minecraft: Java Edition' 1. Launch "Minecraft," and select ...

The only way to switch an existing world to Hardcore mode is to use a third-party app to edit the game's files. How to change game modes in 'Minecraft: Java Edition' 1.

In Minecraft, players will find themselves exploring almost-infinite worlds. Depending on the game mode, they will have different experiences in Minecraft.