ddd's harder mobs

Mobs scale in the vanilla way: as the player progresses, their health, armor, weapons and effects increase through a leveling system. The scaling is continuous, with discrete stages, and it is driven by data so that new scaling rules can be added without code. Multiplayer is handled by scaling each mob from the level of the closest player when it spawns, and the scaling reflects that player's own performance.

The system adjusts in both directions. When a player dies and loses equipment, the scaling can drop so mobs do not stay overpowered. Player damage is the only limit on scaling, and the mod can also support mob attribute levels above 1024 when the separate AttributeFix mod is present. The mod adds no new mob AI, entities or items, and a vanilla client can join a server without it installed on the client side.

The mod requires a server install: the server needs it, and players may add it, so the scaling runs on the server. It is published for Forge and NeoForge, for 1.20.1 and 1.21.1, and is open source under the MIT License. The initial design targeted an unofficial TaCZ port for 1.21.1 NeoForge, and datapacks or mods that alter existing entities' health are not affected by the scaling.