Multiplayer Bosses
by perl
Multiplayer Bosses scales boss health and loot drops to the number of players on a server, so fights stay fair as more people join.
What it does
Boss health can grow with each player in the area, using a per-player multiplier, or a flat multiplier applied on top. Drops can be scaled the same way, and by default each boss hands out one Loot Bag per player. Scaling for player count can be overridden in the config, and a loot multiplier can be set separately from health.
The mod is server-side in function, but the environment is client and server, so the server and every player need it installed. Files are published for Forge and NeoForge only, for 1.20.1 and 1.21.1, with 1.1.3 for 1.20.1 and 1.0.0 for 1.21.1 as the latest builds. The code is open source under the GNU General Public License v3.0 only, and the source code and issue tracker are public. The author notes a Fabric and Forge version in progress, and that vanilla health values cannot exceed 1024, so a bypass relies on the AttributeFix mod.
Key features
Health scaling per player
Boss health can increase with the number of players, using a per-player multiplier or a flat multiplier.
Drop scaling
Loot drops can be multiplied, and Loot Bags can be given per player by default.
Configurable boss list
A list in the config selects which boss entities the scaling applies to.
Loader tags
An option lets the mod use loader tags when matching bosses.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Multiplayer boss fights
Servers where several players fight the same boss can keep the challenge in step with group size.
Who it’s for: Server owners running modpacks or survival worlds with bosses who want fights and rewards to scale with the number of players.
How it compares
ddd's harder mobs is open source under the MIT License, works on Forge and NeoForge for 1.20.1 – 1.21.1, and only the server needs it. ScalingMobs is also open source, under the Apache License 2.0, for the same loaders and versions, with the server required and clients optional. Boss Ultimatum is not open source, supports Fabric, Forge and NeoForge for 1.20.1 – 1.21.1, and is server-side only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Multiplayer Bosses | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-03-15 |
| ddd's harder mobs | Forge and NeoForge | 1.20.1 – 1.21.1 | Server required, client optional | 2026-07-26 |
| ScalingMobs | Forge and NeoForge | 1.20.1 – 1.21.1 | Server required, client optional | 2026-09-28 |
| Boss Ultimatum | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2025-05-04 |
Questions
Does Multiplayer Bosses need to be installed on both sides?
Which loaders does Multiplayer Bosses support?
Can the scaling be turned off for some bosses?
In the catalog
Multiplayer Bosses is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from perl
Similar mods
What the author says
I am working on a Fabric and Forge version. *Note: Vanilla minecraft health values cannot exceed 1024. To bypass this you can use this mod AttributeFix
Official listing
- Modrinth page
- modrinth.com/mod/multiplayerbosses
- Owner
- perl
- Published
- 2024-04-13
- Updated on Modrinth
- 2026-03-15
- Facts verified
- 2026-10-15