Rather than deleting your world when you die, you are instead teleported to a random location.
To prevent you from intentionally finding "previous lives":
- ReducedDebugInfo is enabled
- Compasses point "North" instead of towards your original location
- Map "edge" markers are removed, via an included resourcepack
But if you keep playing, there's always a chance that you might rediscover a long-lost base from a previous life.
This is an "instantly playable" version of the ForeverWorld datapack ( https://www.curseforge.com/minecraft/customization/foreverworld )