>Plays like GTA or RDR
>Corpses, body parts, bloodstains, destroyed/damaged properties, and vehicles don't despawn and permanently stay in the overworld
>Limited amount of NPCs and mobs that can ever be spawned in the game.
>Once you kill them all they don't ever respawn
>Perfectly possible for the player to annihilate every single living thing in the game, and permanently run out of NPCs and mobs
>Overworld eventually becomes a desolated, unnerving, abandoned hellscape all caused by the player killing and destroying everything