Here's one if you die in game your character is dead forever and the story changes to a new character that can loot the old ones body and loot it but it could've been looted by others too so if you die the game basically resets. Make this an mmo and there you go the world's most irritatingly addictive game
I would play this.
Especially if the bodies of dead players stayed there forever and slowly built up over time until no one could survive anymore in the world because it's just a massive pile of corpses.
No the corpses decay slowly and then are eventually buried but with unmarked graves unless you choose to Burry the body (you gain back some exp and skills this way) but the world will start off beautiful and slowly become dreary and decay with the more bodies that fill the world. If forgotten bodies are left too long then diseases start to spread and that will give characters negative buffs it even slowly kill them
Especially if the bodies of dead players stayed there forever and slowly built up over time until no one could survive anymore in the world because it's just a massive pile of corpses.
"You do now..."