Changelog - Version 1.1.2

Major Overhaul

• Fully reworked zombie-only spawning system:
  • Natural mob spawning is now entirely disabled (gamerule doMobSpawning false).
  • Zombies are now force-spawned near all players in both the Overworld and the Nether every tick.
  • All other mobs are instantly removed from the game.
  • Zombie variants are now persistent by default and will not despawn.

Cleanup

• Removed redundant function spawn_nether_zombies.mcfunction.
• Improved tick scheduling for consistent behavior.

Result

• Only zombies and their variants will ever appear in the world, guaranteed.