One Block Challenge

What is One Block Challenge?

One Block Challenge is a Fabric modpack for Minecraft 1.21.10, published by Lactobacillus on Modrinth since 2025.

The latest release, 1.1.0 from Aug 2, 2026, declares 16 mods plus 5 other projects such as resource packs or shaders. It has 2 published versions.

With 58K downloads it ranks #309 of the 518 most-downloaded Modrinth modpacks we track, and its authors tag it as adventure, challenging and combat.

• Adventure
• Challenging
• Combat

Most widely used mods in One Block Challenge

The latest version declares 21 projects, 16 of them mods. The ones below appear in the most packs we track.

• FerriteCore
• Entity Culling
• Sodium
• Fabric API
• ImmediatelyFast
• Lithium
• Iris Shaders
• Sodium Extra
• Dynamic FPS
• Simple Voice Chat
• Balm
• Clumps
• Model Gap Fix
• Hardcore Revival
• CodxLib
• One Block

Full One Block Challenge mod list

1 more file is bundled inside the pack without a Modrinth project, so we cannot name it.

How its mod list compares

Less common picks: 2 mods found in five or fewer tracked packs.

• CodxLib
• One Block

Packs with the most mods in common

• One Block ModPack Fabric for 1.21.10 10 mods in common
• One Block Original Fabric for 1.21.11 12 mods in common
• Fabric Optimized Fabric for 1.21.11 9 mods in common
• Hoplite for Lunar Client Fabric for 1.21.11 7 mods in common
• AxolotlClient (Modpack) Fabric / Quilt for 26.2 7 mods in common

What kinds of mods are in One Block Challenge?

Of its 16 mods, 9 are tagged optimization, 6 utility and 3 adventure. Mods can carry several tags, so the counts overlap.

At 56% optimization, that is a larger share than 92% of the 491 packs we track.

• optimization: 9 (56%)
• utility: 6 (38%)
• adventure: 3 (19%)
• library: 3 (19%)
• game mechanics: 2 (13%)
• social: 2 (13%)

How big is One Block Challenge?

With 16 mods, One Block Challenge has fewer mods than 91% of the 491 packs we track.

The pack file is 6.0 MB. 7 mods are client-only and 9 also run on a server. Alongside the mods it declares 5 shaders.

How actively is One Block Challenge updated?

One Block Challenge was first published on Dec 6, 2025, and has 2 published versions in total.

The latest release, 1.1.0, is dated Aug 2, 2026, 101 days before our data was fetched on Nov 11, 2026. Releases have covered 1 Minecraft version over 239 days.

Staple mods One Block Challenge includes and leaves out

Across the 325 Fabric packs we track, 15 mods turn up most often. One Block Challenge includes 8 of them; it leaves out Cloth Config API, Mod Menu, Fabric Language Kotlin, YetAnotherConfigLib (YACL), Reese's Sodium Options, Text Placeholder API and Architectury API.

How much RAM does One Block Challenge need?

One Block Challenge needs 4 GB allocated (3 GB minimum). Our estimate from the 16-mod list, not measured.

How to set allocated memory

How to install One Block Challenge

Search for "One Block Challenge" in the Modrinth source of your launcher. Pick version 1.1.0 for Minecraft 1.21.10 (Fabric). Modpack install guide.

How do I make an One Block Challenge server?

One Block Challenge is marked as needing a server-side install, so the server must run the same mods and version as the players.

• Match the version: the latest pack version is 1.1.0 for Minecraft 1.21.10.
• Loader: Fabric.
• Memory: at least 3 GB (our estimate).

Modpack server guide.

Versions

One build.

Official links

• One Block Challenge on Modrinth (downloads and changelog)

Facts on this page come from Modrinth's public API, last fetched Nov 11, 2026. Descriptive text is our own. Spotted an error, or are you the author and want something changed? See disclaimer and takedowns.