Boss Update
by wincerman
Boss Update adds three new bosses to Minecraft, each with unique powers and custom drops that players earn by defeating them.
What it does
Each boss is a fight with its own abilities, and defeating one grants the player new powers. The bosses drop custom loot, and the mod supports multiplayer worlds, so groups of players can take on the same encounter together. A boss fight can be a challenge for solo adventurers as well.
Boss Update runs on the client and on the server, so both sides need it and every player on the server needs it installed. The mod is published for NeoForge only, with files for 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9 and 1.21.10, and it is released under the Apache License 2.0 but is not open source.
Key features
Three distinct bosses
The mod adds three new bosses, each with its own set of powers and a different style of fight.
Custom boss drops
Each boss drops items that are unique to it, giving players a reason to return to the encounter.
Boss abilities
Defeating a boss grants the player new abilities that remain available afterward.
Multiplayer support
The bosses work in multiplayer worlds, so several players can take part in the same fight.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Adventure progression
Players working through a survival world can use the boss fights as milestones, with each defeat adding new abilities.
Group encounters
Servers can host the bosses for groups of players who want a shared challenge.
Who it’s for: Players who want new boss encounters with custom loot and abilities, and server owners who want multiplayer boss fights on a NeoForge server.
How it compares
Artifacts and Bosses is a NeoForge mod for 1.21.1 only, under All rights reserved, and it is not open source. Hazelia covers 1.21.1 – 1.21.10 on NeoForge, also under All rights reserved and not open source. Basalt Arena covers 1.21.1 on NeoForge under the MIT License, while EssenceBound is a NeoForge mod for 1.21.4 under the Apache License 2.0. Boss Update covers 1.21.4 – 1.21.10, the same environment as all of them.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Boss Update | NeoForge | 1.21.4 – 1.21.10 | Client and server | 2025-11-26 |
| Artifacts and Bosses | NeoForge | 1.21.1 | Client and server | 2026-03-05 |
| Hazelia | NeoForge | 1.21.1 – 1.21.10 | Client and server | 2025-12-02 |
| Basalt Arena | NeoForge | 1.21.1 | Client and server | 2026-08-09 |
| EssenceBound | NeoForge | 1.21.4 | Client and server | 2025-07-30 |
Questions
Which loader does Boss Update use?
Does Boss Update have to be installed on both sides?
Which game versions are supported?
In the catalog
Boss Update is one of 11,058 Mobs mods on ModsFinder, and one of 4,974 Mobs mods for NeoForge. 15,569 mods support Minecraft 1.21.10.
More from wincerman
Similar mods
What the author says
Get ready—this mod cranks your adventure up to epic! Jump into battles against brand-new, super-cool bosses, each packed with unique powers and custom drops. And the best part? Defeat them and you get their abilities! Summon your own loyal minions, unleash wild attacks, and discover tons of other awesome powers…
Official listing
- Modrinth page
- modrinth.com/mod/boss-update
- Owner
- wincerman
- Published
- 2025-11-26
- Updated on Modrinth
- 2025-11-26
- Facts verified
- 2026-10-15