
About this Mod
(No, this mod is not a coremod. That's the joke)
A mod that allows people to create Modded UHC's.
It implements a book similar to the one from UHC Blox.
Within the book you can change all the UHC settings. If there's a setting missing note me and I'll add it.
If there's any mod support you'd like just create an issue on the Github
The mod is highly inspired by Gerrybrano's UHC Blox.
Crafttweaker support (1.12):
//Auto Conversion
mods.ultrahardcoremod.conversion.addConversion(IItemStack input, IItemStack result , IItemStack result2 etc (max of 9));
//Auto Cook
mods.ultrahardcoremod.autocook.addRecipe(IItemStack stack, IItemStack stack2, float experience); mods.ultrahardcoremod.autocook.removeRecipe(IItemStack output);
//Spawn Items (if ever you want people to start the uhc with specific items)
mods.ultrahardcoremod.starting.addStartingGear(IItemStack input, IItemStack result , IItemStack result2 etc (max of 9));
//Twilight forest boss respawn
//Example position = "-1,6,100"
//Example boss = "hydra"
mods.ultrahardcoremod.twilight.boss.addBoss(String position, String boss);
//Change Entity Data upon it's spawn (For advanced users AKA users that are familiar with the /entityData command)
//Example entityID String = "minecraft:wolf"
//Example IEntityDefinition = <entity:minecraft:wolf>
//Example dataChange = "{Attributes:[{Name:generic.maxHealth,Base:10}],Health:10.0f}" (Changes health of the mob to 10)
mods.ultrahardcoremod.datachanger.changeData(String entityID, String dataChange);
mods.ultrahardcoremod.datachanger.changeData(IEntityDefinition entity, String dataChange);

For questions feel free to join my Discord.
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Available Versions
How to Install Ultra Hard Coremod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).
Install Mod
Open the mod browser in the dashboard and search for " Ultra Hard Coremod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.12.2
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Ultra Hard Coremod server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.
Is Ultra Hard Coremod compatible with forge?
Ultra Hard Coremod officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Ultra Hard Coremod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Ultra Hard Coremod consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install Ultra Hard Coremod with just one click on your server.