Mob Stages Mod 1.12–1.12.2

Mob Stages is an expansion for the GameStage API that enables modpack authors to integrate hostile and passive mob spawning into custom progression systems. Through CraftTweaker scripting, pack creators can gate specific entity encounters behind player milestones and quest stages.

When a creature attempts to spawn in the world, the mod checks nearby players for the required progression stage and can substitute an alternative placeholder mob if conditions are not met. It allows modpacks to enforce gradual combat challenges as adventurers level up.