About Ultris: Boss Expansion
From ModrinthExplore 8 new and exciting bosses to take on across your world, with new structures, items, and stories for you to unravel.
note: older and currently unmaintained project!
***
If using the Datapack version, I recommend installing the >> Optional Resourcepack <<
Ultris has a Discord Server for getting help and discussing my mods! Click here to join.
About:
Ultris is a Minecraft Boss Expansion datapack that expands Minecraft with 8 new exciting bosses to take on, each with their own quests and rewards. Explore multiple new boss structures, special items, and new foes for you to take on.
Unique boss patterns, boss music, stages, sounds and visuals all come together to create these awesome bosses, from bosses that can spawn early game, to bosses for the end game player.
To summon the bosses with cheats, use /function 1_splatus:ultris/admin_menu and select the option "Summon Bosses"
Wiki:
Click here to visit the Ultris Wiki!
To view more info on bosses, you can check out the Ultris wiki by clicking the link above. The Wiki is not complete, but it can be completed faster with your help! If you'd like to contribute to the wiki, join my Discord Server, ping @limesplatus#4730 and I'll allow you access to editing.
Commands:
/function 1_splatus:ultris/admin_menu
License
For view of the entire license, click here. In summary, just dont republish this project or send modified copies to other people. You may modify it in singleplayer or in your own server. You are free to add this to modpacks as well.
Only one file is permitted to be edited in a public modpack, that being the mod's default settings file. This is helpful for modpack devs if they want certain features disabled from one of my mods. Join my discord if you need help locating this mod's default settings file.
***
Join the Discord Server to chat, discuss, and get help with my mods!
https://discord.gg/XZVARKkjwt
Help support the making of my datapacks with memberships or donations on Ko-fi!
https://ko-fi.com/limesplatus/tiers
Credits:
Creator/Programmer: • LimeSplatus#4730
Blaze King Music + Unused Shulker Stone Music: • humanoid#9099
Optimization Help: • Holmes (iRedSC)#0281
Multiple Blaze King Tower Rooms By: • the game master#0666 , • Just Fan Account#2495 • Frektip#4587 • Churner#6711
Highlights
From source dataGame versions
Supports 7 Minecraft versions, the newest being 1.20.1.
Loaders
Runs on Data pack, Fabric, Forge and Quilt.
Footprint
Rated a light load on a server.
Ultris: Boss Expansion on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Data pack, Fabric, Forge, Quilt
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 5.6.9c+mod, released 2023-11-19
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Data pack | 1.20 to 1.20.1 (2 versions) | 1.20.1 |
| Fabric | 1.20 to 1.20.1 (2 versions) | 1.20.1 |
| Forge | 1.20 to 1.20.1 (2 versions) | 1.20.1 |
| Quilt | 1.20 to 1.20.1 (2 versions) | 1.20.1 |
From 5 recorded builds of Ultris: Boss Expansion.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 5.6.9c+mod | 2023-11-19 | 1.20 to 1.20.1 (2 versions) | Fabric, Forge, Quilt |
| 5.6.9c | 2023-11-19 | 1.20 to 1.20.1 (2 versions) | Data pack |
| 5.6.9b+mod | 2023-06-25 | 1.20 to 1.20.1 (2 versions) | Fabric, Forge, Quilt |
| 5.6.9b | 2023-06-25 | 1.20 to 1.20.1 (2 versions) | Data pack |
| 5.6.9a+mod | 2023-06-12 | 1.20 | Fabric, Forge, Quilt |
Run Ultris: Boss Expansion on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogCreatures & NPCs
Adds or changes creatures, NPCs and how they behave.
Runs on your server
From source side supportModrinth lists Ultris: Boss Expansion as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- Data packFabricForgeQuilt
- Runs on
- Serverrequired on the server
- Game versions
- 1.20.1 and 6 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓Authorlimesplatus, as published on Modrinth
- ✓LicenseLicenseRef-CustomFree
