world of the dead

It sounds a bit gloomy, but let's take a closer look. When you die, of course, you get the option to respawn and leave the world.

As soon as one as you try to respawn, you are temporarily in the world of the dead. It should reflect "reality" but a bit dartker, foggy and bluish, there are also structures like reality. You are exactly where you "died". You can move and walk. No corpse can be seen. You yourself are glowing green and semitransparent (ectoplasm) person. You have, so to speak, a certain delay until you are offiially resuscitated. Maybe also optionally, whetether you want to stay in this world as long as you want or out of this world and back into reality. Building and breaking is not possible in this world.

(From a purely technical point of view, that would be time-consuming. An "effect" can simply be added to the player to make it look like you are in another world. But you don't see any players and entities from the normal world, as well as from the normal world (to you), except you.)

That would take the gaming experience to a whole new level even after death, and would be nice entertainment. Perhaps it could also contain secrets, where you could then put forward theories yourself what that means. The community could deal with it for a long time. Who knows, it would be amusing.