One Block ModPackModpacks · 1.21A lightweight OneBlock-based modpack that lets you start on a single regenerating block and build your world from nothing. Includes extra performance mods for…

A challenging and addictive One Block modpack where every block counts, letting you start from a single block and gradually expand your world with creativity…
Direct download from Modrinth · 34,842 downloads
One Block Original is a modpack made by Lactobacillus. A challenging and addictive One Block modpack where every block counts, letting you start from a single block and gradually expand your world with creativity…
It supports Minecraft 1.21. It has been downloaded 34,842 times on Modrinth. The last update came out on Jan 11, 2026.
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 |
|---|---|---|---|---|
| 35K | 1.21 | Jan 11, 2026 | Free | |
| 133K | 1.21 | Nov 30, 2025 | Free | |
| 58K | 1.21 | Aug 2, 2026 | Free | |
| 34K | 1.20 | Feb 24, 2025 | Free |
Not yet. The newest version it supports is Minecraft 1.21.
Yes. One Block Original is free to download from Modrinth.
Yes. The last update came out in the past day.
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