
Oneblock Ultimate
The ultimate modpack for Oneblock!
About this Modpack
Oneblock Ultimate
A modern recreation of the classic Oneblock experience — rebuilt for NeoForge 1.21.1.
Oneblock Ultimate is a polished, stable, and flexible Oneblock modpack, recreated entirely from scratch. The original from TL Mods was never republished, so this is a fresh take — redesigned for modern systems and built to run any Oneblock map you want to play.
Getting started
- Install the pack with the Modrinth app
- On first launch, a FancyMenu prompt offers recommended Oneblock maps — pick one and you're in
- Later, swap in any map you like. Classic, modded, themed, or challenge-based — it all works
The pack doesn't bundle maps on purpose: we can't redistribute other people's work
without their consent, and that respect is exactly what sets us apart. Oneblock
Ultimate is the only pack built around that principle — and the in-game helper
makes setting up your map effortless instead of a chore.
What's inside
Performance & FPS
- Sodium, Lithium, FerriteCore, Dynamic FPS, ImmediatelyFast
- Entity Culling, More Culling, Model Gap Fix, LightSpeedRe, ScalableLux
- Alternate Current, Clumps, LambDynamicLights, Lighty
Visuals & Shaders
- Iris Shaders, Reese's Sodium Options, Sodium Extra, Smooth Gui
- Entity Model Features, Entity Texture Features, Continuity
Quality of Life
- REI, Jade, AppleSkin, Enchantment Descriptions, Better Advancements
- Controlling, Crafting Tweaks, Mouse Tweaks, Inventorio, TrashSlot
- Bridging Mod, Forgiving Void, NetherPortalFix, KleeSlabs, Snad
- No Crop Trample, Better Farming, FallingTree, Ding, Tutorial Suppressor
Storage & Automation
- Storage Drawers, Iron Barrels, Iron Furnaces, GraveStone Mod
World & Content
- Supplementaries, Supplementaries Squared, Doggy Talents Next
- AI Improvements, Sleep, Let Me Despawn, Almanac
Maps & Server
- Xaero's Minimap, Xaero's World Map
- Simple Voice Chat, LAN Server Properties, NeoAuth, No Chat Reports
Audio & Immersion
- Sound Physics Remastered, Melody, Immersive UI, AsteorBar, Neat
Libraries (API) — Architectury, Balm, Cloth Config, YACL, Bookshelf, Moonlight Lib, Kotlin for Forge, FancyMenu, and more
Why Oneblock Ultimate?
- A clean, modern base: built specifically for Oneblock, nothing extra, no forced worlds
- NeoForge 1.21.1: the current ecosystem for performance, compatibility, and stability
- Performance first: a curated stack that stays smooth even in late-game islands
- Regularly updated: new versions keep your world alive and compatible
Support
Found a bug or have a suggestion? Send a message in the discord server. I read everything. Literally.
Looking for a server to run it on? I use NeyHost — grab 30% off your first month with code LEAF30 (their hosting is genuinely great):
Available Versions
How to Set Up a Oneblock Ultimate Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Oneblock Ultimate). Based on player count: per 5 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Oneblock Ultimate" and click "Install". The neoforge loader and Minecraft 1.21.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Oneblock Ultimate server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong neoforge loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Oneblock Ultimate server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €5.2/month).
Can I add custom mods to Oneblock Ultimate without conflicts?
Yes, but check compatibility: only use mods for the same loader (neoforge) and same Minecraft version (1.21.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Oneblock Ultimate server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
Similar Modpacks
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Supported Versions
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From €5.20/month; 6 GB RAM is recommended for best performance.
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