CurseForge · Minecraft mod
Lepton (Forge)
Adding blocks that should already be in the game by default, such as vanilla stairs, slabs, walls, pressure plates, buttons and more!
Quick answer
Which Lepton (Forge) release should I use?
Lepton (Forge) lepton-1.21.1-3.1.0.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is Lepton (Forge) required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Lepton (Forge) lepton-1.21.1-3.1.0.jar need?
lepton-1.21.1-3.1.0.jar. Change the file and its required mods may change too.
Install Differentiate, Differentiate first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Lepton (Forge) without breaking your instance.
Built for Lepton (Forge) lepton-1.21.1-3.1.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use lepton-1.21.1-3.1.0.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Differentiate, Differentiate first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside lepton-1.21.1-3.1.0.jar. It opens that exact file at the source.
About this project
What does Lepton (Forge) add?

Lepton is a mod about adding blocks that should already be in the game by default, such as vanilla stairs, slabs, walls, pressure plates, buttons and more! It currently focuses on porting some forgotten Quark features from 1.12, but also includes some new features such as cracked sandstone.
Credits:
Rexschwert, for the Russian translation
Project description from CurseForge.
Pick your setup
Lepton (Forge) by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.18.2
1 loader build1.16.5
1 loader build1.16.4
1 loader build1.16.3
1 loader build1.16.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Lepton (Forge) versions and loaders
lepton-1.21.1-3.1.0.jar
20 Jul 2026
lepton-1.21.1-3.0.1.jar
6 Jun 2026
3.0.0
lepton-1.21.1-3.0.0.jar
1 Jun 2026
lepton-1.21.1-3.0.0.jar
1 Jun 2026
lepton-1.18.2-2.0.0.jar
12 Mar 2022
lepton-1.16.5-1.3.2.jar
21 Aug 2021
lepton-1.16.5-1.3.1.jar
17 Jul 2021
lepton-1.16.5-1.3.0.jar
28 Mar 2021
lepton-1.16.5-1.2.7.jar
12 Feb 2021
lepton-1.16.4-1.2.5.jar
14 Jan 2021
lepton-1.16.4-1.2.4.jar
12 Jan 2021
lepton-1.16.4-1.2.3.jar
4 Jan 2021
Looking for an older file? The official CurseForge project page is in Resources.