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.

While Survival mode is fun, Minecraft has much more to offer. Here's how to change game modes on Minecraft at any time.