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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.


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"


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.


/function 1_splatus:ultris/admin_menu


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.

image Join the Discord Server to chat, discuss, and get help with my mods!

image Help support the making of my datapacks with memberships or donations on Ko-fi!


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

External resources

Project members



Technical information

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