Description
Gallery
Changelog
Versions
Performance Comparison
| Metric | Vanilla | Ultralight | Improvement |
|---|---|---|---|
| Min Frametime | 6 ms | 4 ms | ~1.5ร better |
| Max Frametime | 107 ms | 54 ms | ~1.98ร better |
| Avg FPS | 134 | 277 | ~2.07ร higher |
Tested under simulated gameplay at 16 render distance.
Ultralight is best used on client.
If you're looking to improve your server's performance, try out Lilypad!
Want to play Minecraft with a new little spin? Try Wildflower!
Updating the Modpack & Tags
Before a new Ultralight update gets uploaded, it undergoes simulated gameplay testing to assess performance under normal conditions. If the update meets our internal performance targets, it will be released with an โAโ in the version name. If it fails to meet those targets, it will be released with an โFโ in the version name.
Tags
- A โ Stable and user-ready; no major issues.
- B โ Acceptable but below optimal performance targets (FPS and/or frametime slightly off).
- F โ Performance issues; FPS and/or frametime significantly below target.
OS Compatibility
| OS | Compatible |
|---|---|
| Windows | โ |
| MacOS (ARM) | โ |
Tested on Apple M1. Measurements taken on Windows.
Socials
We have a Discord server!
All Versions
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[26.2_2.2_A] Ultralight 26.2_2.2_A
by Unknown on Oct 18, 2026
Download
First release of Ultralight for 26.2
[1.21.8_2.2_A] Ultralight 1.21.8_2.2_A
by Unknown on Oct 18, 2026
Download
Updated various mods. Dropped support for:
1.21.6 & 1.21.7
1.21.6 & 1.21.7
[1.21.6_2.1_A] Ultralight 1.21.6_2.1_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[1.21.6_2.0_A] Ultralight 1.21.6_2.0_A
by Unknown on Oct 18, 2026
Download
Updated to Fabric version 0.18.4.
Fixed failed start issue.
Fixed failed start issue.
[Ultralight_1.21.6_1.5_A] Ultralight_1.21.6_1.5_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[Ultralight_1.21.7_1.5_A] Ultralight_1.21.7_1.5_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[Ultralight_1.21.8_1.5_A] Ultralight_1.21.8_1.5_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[Ultralight_1.21.9_1.5_A] Ultralight Ultralight_1.21.9_1.5_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[Ultralight_1.21.10_1.4_A] Ultralight_1.21.10_1.4_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[Ultralight_1.21.6_1.4_A] Ultralight_1.21.6_1.4_A
by Unknown on Oct 18, 2026
Download
Updated mods.
[1.21.10_1.2_A] Ultralight 1.21.10_1.2_A
by Unknown on Oct 18, 2026
Download
Updated mods to keep the modpack running smoothly.
[1.21.9_1.3_A] Ultralight 1.21.9_1.3_A
by Unknown on Oct 18, 2026
Download
Updated mods to keep the modpack running smoothly.
[1.21.8_1.3_A] Ultralight 1.21.8_1.3_A
by Unknown on Oct 18, 2026
Download
Updated mods to keep the modpack running smoothly.
[1.21.7_1.3_A] Ultralight 1.21.7_1.3_A
by Unknown on Oct 18, 2026
Download
Updated mods to keep the modpack running smoothly.
[1.21.6_1.3_A] Ultralight 1.21.6_1.3_A
by Unknown on Oct 18, 2026
Download
Updated mods to keep the modpack running smoothly.
[1.21.10_1.1_A] Ultralight 1.21.10_1.1_A
by Unknown on Oct 18, 2026
Download
Updated mods to the latest version.
[1.21.9_1.2_A] Ultralight 1.21.9_1.2_A
by Unknown on Oct 18, 2026
Download
Updated mods to the latest version.
[1.21.8_1.2_A] Ultralight 1.21.8_1.2_A
by Unknown on Oct 18, 2026
Download
Updated mods to the latest version.
[1.21.7_1.2_A] Ultralight 1.21.7_1.2_A
by Unknown on Oct 18, 2026
Download
Updated mods to the latest version.
[1.21.6_1.2_A] Ultralight 1.21.6_1.2_A
by Unknown on Oct 18, 2026
Download
Updated mods to the latest version.
[1.21.10_1.0.0_A] Ultralight 1.21.10_1.0.0_A
by Unknown on Oct 18, 2026
Download
- Ultralight** 1.0.0 for 1.21.10.
[1.21.9_1.1.0_A] Ultralight 1.21.9_1.1.0_A
by Unknown on Oct 18, 2026
Download
This new modpack version includes updated mods and extra ones designed to improve mob and particle performance through async optimization.
[1.21.8_1.1.0_A] Ultralight 1.21.8_1.1.0_A
by Unknown on Oct 18, 2026
Download
This new modpack version includes updated mods and extra ones designed to improve mob and particle performance through async optimization.
[1.21.7_1.1.0_A] Ultralight 1.21.7_1.1.0_A
by Unknown on Oct 18, 2026
Download
This new modpack version includes updated mods and extra ones designed to improve mob and particle performance through async optimization.
[1.21.6_1.1.0_A] Ultralight 1.21.6_1.1.0_A
by Unknown on Oct 18, 2026
Download
This new modpack version includes updated mods and extra ones designed to improve mob and particle performance through async optimization.
[1.21.8_1.0.0_A] Ultralight 1.21.8_1.0.0_A
by Unknown on Oct 18, 2026
Download
- Ultralight** 1.0.0 for 1.21.9.
[1.21.7_1.0.0_A] Ultralight 1.21.7_1.0.0_A
by Unknown on Oct 18, 2026
Download
- Ultralight** 1.0.0 for 1.21.7.
[1.21.6_1.0.0_A] Ultralight 1.21.6_1.0.0_A
by Unknown on Oct 18, 2026
Download
- Ultralight** 1.0.0 for 1.21.6.
[1.21.9_1.0.0_A] Ultralight 1.21.9_1.0.0_A
by Unknown on Oct 18, 2026
Download
- Ultralight** 1.0.0 for 1.21.9.
