A lightweight Minecraft mod that dynamically scales boss attributes based on the number of nearby players — without any performance overhead.
When a player approaches a boss, the mod recalculates the boss's attributes according to the configured multipliers. When a player leaves, the stats update again. This event‑driven approach means no performance impact during normal gameplay.
Example config/multiplayer_boss_fight/config.json:
[
{
"entities": ["#forge:bosses", "minecraft:wither_boss"],
"attribute_modifiers": [
{
"attribute": "minecraft:generic.max_health",
"operation": "MULTIPLY_TOTAL",
"value": 0.4,
"max_limit": 4
},
{
"attribute": "minecraft:generic.attack_damage",
"operation": "MULTIPLY_TOTAL",
"value": 0.1,
"max_limit": 4
}
]
},
{
"entities": ["minecraft:ender_dragon"],
"attribute_modifiers": [
{
"attribute": "minecraft:generic.max_health",
"operation": "MULTIPLY_TOTAL",
"value": 0.25,
"max_limit": 4
},
{
"attribute": "minecraft:generic.attack_damage",
"operation": "MULTIPLY_TOTAL",
"value": 0.1,
"max_limit": 4
}
]
}
]
entities
List of boss entity IDs. You can use tags (prefixed with #).
attribute_modifiers
A list of attribute modifications, each containing:
attribute – Attribute to modify (e.g. generic.max_health).operation – ADDITION, MULTIPLY_BASE, or MULTIPLY_TOTAL.value – Multiplier per player (e.g., 0.4 = +40% per player).max_limit – Upper limit of players that affect the boss. Additional players will not increase stats further.Enjoy balanced boss fights for any group size!
