One Block Challenge
by DerMikiger
One Block Challenge starts a survival run on a single regenerating block floating in an empty void, with progress through 15 thematic phases.
What it does
The block sits at a fixed position in the void. Breaking it spawns the next block after a short delay, and each break counts toward a progress total that is tracked for the world. The count runs from zero with no upper limit, so a run can continue indefinitely. Progress is saved automatically for each world, and the mod supports several worlds, each with its own challenge.
Phases advance as the player keeps breaking the block. Each of the 15 phases brings new blocks, resources, mob types and mechanics, drawn from different biomes and dimensions in the base game. Mobs spawn with a 60 percent chance of passive types (cow, pig, sheep, chicken, horse) and 40 percent hostile types (zombie, skeleton, drowned, spider). The mod is published for Fabric only and runs on client and server, so the server and every player need it. Versions 1.20.1 and 1.21.4 have files, with 0.3.0-HOTFIX1-1.21.4 as the latest, and snapshot builds are not published.
Key features
Regenerating single block
One block regenerates in a fixed position above the void, and the next one appears shortly after each break.
Progress counter
The count of blocks broken is kept per world, starts at zero and has no ceiling.
Fifteen phases
Each phase has its own theme, blocks and resources, and phases are reached by breaking the block repeatedly.
Mob spawning
Passive and hostile mobs appear with fixed shares, and the hostile types change as phases progress.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want a long, structured survival challenge in a skyblock-style setting, and server owners who want a minigame with separate worlds and saved progress.
How it compares
Challenges is a Fabric mod for 1.21.1 – 26.2 that is server-side only and open source under the GNU General Public License v3.0 only, so players can join without installing it. One Block To End All One Blocks is open source under the MIT License and published for 1.21.4 only, the same version this mod supports as its latest. Random OneBlock covers Fabric, Forge and NeoForge for 1.20.1 – 1.21.11 under the Apache License 2.0, and is not open source in this catalog.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| One Block Challenge | Fabric | 1.20.1 – 1.21.4 | Client and server | 2026-03-13 |
| Challenges | Fabric | 1.21.1 – 26.2 | Server-side only | 2026-07-18 |
| One Block To End All One Blocks | Fabric | 1.21.4 | Not published | 2026-04-05 |
| Random OneBlock | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Client and server | 2026-02-20 |
Questions
Does One Block Challenge need to be installed on the server?
Which game versions does One Block Challenge support?
Can a server run more than one challenge?
In the catalog
One Block Challenge is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
Start on a single block. Survive. Progress through 15+ unique phases. Conquer the void! OneBlock Challenge is a Fabric Skyblock survival mod where you begin your journey on one regenerating block suspended in the void. Break it repeatedly to progress through 15 thematic phases inspired by Minecraft's diverse biomes…
Official listing
- Modrinth page
- modrinth.com/mod/oneblockchallenge
- Owner
- DerMikiger
- Published
- 2025-12-04
- Updated on Modrinth
- 2026-03-13
- Facts verified
- 2026-10-15