One Block Challenge Build for Minecraft 1.21.10
A Minecraft modpack centered around the One Block challenge, where players begin on a single block that regenerates infinitely. Progress through unique phases, gather resources, explore dimensions, and build your world from almost nothing.
- downloads
- 5 downloads
- views
- 49 views
- Updated
- Updated 29.09.2026
- 1.21.10
Fabric- Client and server
About the One Block Challenge modpack
One Block is a fun survival modpack where you start on a single block floating in the void. Breaking the block gives you different items, blocks, and mobs as you progress through phases. Build your island, gather resources, and survive using just one block.
How to install One Block Challenge
With Millida Launcher
Install Millida Launcher
The launcher is free: download it at millida.net/launcher and sign in with any nickname.
Click “Install” on this page
The launcher opens and installs the modpack for Minecraft 1.21.10 on Fabric automatically.
Launch the game
A profile with it appears in the launcher: click “Play”.
Manually
Download the modpack archive
In the version list above, pick the file one block challenge 1.1.0.mrpack (6.0 MB).
Import it into a launcher
A launcher that supports modpacks (Millida Launcher, Prism) takes the archive via “Add modpack”, then “From file”. No need to unpack it yourself.
Allocate memory
Modpacks need more memory than the plain game: set 4–6 GB in the profile settings.
On a server
Use the “To server” button
On Millida Hosting, the button at the top of the page uploads the file to your server and restarts it for you.
Invite friends: they install the same modpack
To join the server, every player needs the same modpack version.
Minecraft 1.21.10 runs on Java 21: with a different Java version the game may close right after launch.
Versions
With dependencies
| Minecraft | Loader | File | Date | Actions |
|---|---|---|---|---|
| 1.21.10 | Fabric | 1.21.106 MB 5 | ||
| 1.21.10 | Fabric | 1.21.1015 KB |
What it needs to run
- ImmediatelyFastalready included
- Dependencyalready included
- Simple Voice Chatalready included
- Sodiumalready included
- Complementary Shaders - Reimaginedalready included
- Hardcore Revivalalready included
- Dynamic FPSalready included
- Entity Cullingalready included
- Dependencyalready included
- Sodium Extraalready included
- Model Gap Fixalready included
- Complementary Shaders - Unboundalready included
- Clumpsalready included
- Iris Shadersalready included
- Trailer Shadersalready included
- Lithiumalready included
- [BTB] Back To Basicsalready included
- Lethal Shadersalready included
FAQ
Which Minecraft versions does One Block Challenge work on?
Only Minecraft 1.21.10: there are no files for other versions.
Is One Block Challenge for Forge or Fabric?
Only for Fabric: 1.21.10.
Which mods are in the One Block Challenge modpack?
Mods in the modpack include ImmediatelyFast, Dependency, Simple Voice Chat, Sodium, Complementary Shaders - Reimagined, Hardcore Revival, Dynamic FPS, Entity Culling and 9 more.
Which Java does One Block Challenge need?
Minecraft 1.21.10 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.
Where can I download One Block Challenge safely?
On this page: the file one block challenge 1.1.0.mrpack (6.0 MB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 65ba5d31554ddfeaf1d013fd1fa84ce5bd79668b.
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