One Block OriginalModpacks · 1.21A challenging and addictive One Block modpack where every block counts, letting you start from a single block and gradually expand your world with creativity…

A lightweight OneBlock-based modpack that lets you start on a single regenerating block and build your world from nothing. Includes extra performance mods for…
Opens Modrinth · 132,715 downloads there
A lightweight OneBlock-based modpack that lets you start on a single regenerating block and build your world from nothing. Includes extra performance mods for…
One Block ModPack is a modpack made by Lactobacillus. It supports Minecraft 1.21. It has been downloaded 132,715 times on Modrinth. The last update came out on Nov 30, 2025.
The newest is 1.0.0, released on Nov 30, 2025. It is made for Minecraft 1.21.10. It runs on Fabric. The download is 2 KB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
1.0.0 | Nov 30, 2025 | 1.21.10 | Release |
This modpack delivers a fully enhanced OneBlock experience, combining the depth and progression of the original OneBlock mod with a collection of performance-boosting addons for smooth, stable gameplay. Begin your journey stranded in the void on a tiny floating island, where a single regenerating block becomes your only source of materials. With every block you break, new resources appear — from simple dirt and wood to rare blocks from the Nether and End. As you progress, biome cycles, surprise events, friendly mobs, and evolving monster waves keep the world feeling alive and unpredictable.
Explore more than 40 biomes through the OneBlock’s cycling system, unlock entire new material pools by reaching the Nether and End, and survive increasingly challenging encounters designed to scale with your growth. Whether you're gathering essential early-game materials or facing chaotic late-game waves, every block break shapes your story.
To ensure a smooth experience, this modpack includes a curated set of performance mods, improving FPS, reducing lag spikes, and enhancing overall client and server stability. Even players with low-end PCs can enjoy a seamless adventure thanks to optimizations that work quietly in the background without affecting gameplay.
The modpack supports both singleplayer and multiplayer. In multiplayer mode, each player can generate their own independent OneBlock island, spaced safely apart so everyone can progress at their own pace. Optional datapacks allow you to customize the experience even further — from void dimensions to hardcore no-island starts.
With its blend of survival, randomness, progression, and optimization, this modpack offers a clean, polished, and replayable OneBlock journey for all kinds of players. Build, fight, explore, automate, and expand — your entire world grows from one single block.
Written by Lactobacillus. Read it with pictures on Modrinth.
This modpack runs on Fabric for Minecraft 1.21. The launcher you install it with sets that up for you.
Download the .mrpack file from Modrinth.
Open it with a launcher that reads .mrpack files, such as the Modrinth App or Prism Launcher: it makes a new instance with every mod and setting of the pack.
Give the instance enough memory: most modpacks want 4 to 8 GB.
To play it with friends on a server, use the server files of the modpack if its page offers them; otherwise install the same mods on the server.
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| 133K | 1.21 | Nov 30, 2025 | Free | |
| 35K | 1.21 | Jan 11, 2026 | Free | |
| 78K | 1.20 – 1.21 | Jan 18, 2026 | Free | |
| 70K | 1.20 | 23 days ago | Free |
Not yet. The newest version it supports is Minecraft 1.21.
Yes. One Block ModPack is free to download from Modrinth.
Yes. The last update came out in the past day.
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