YTech
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader








YTech
brings you to Stone Age, increasing difficulty on early game by forcing you to use primitive technology for progression.
Also, vanilla mobs like cows, pigs, sheep and chickens are replaced by their wild ancestors.
Vanilla recipes for early game items are modified, forcing tools on some blocks and adding new tools, items and blocks to help you with progression.
Currently mod covers
- Stone age
- Bronze age
- Beginning of iron age (crafting iron ingot is final step right now)
Compatibility
These dependencies are optional, but highly recommended:
- The One Probe - Provides more information about in-world blocks and entities
- Just Enough Items - You can see all changed recipes
- Curios API - Needed for jewelry effects, otherwise items are useless
- KubeJS - Easy way to add/modify/remove YTech recipes (API described on wiki)
- EMI - You can browse all recipes
- Jade - Provides more information about in-world blocks and entities
All bugs report on GitHub.
Ideas for expanding implemented ages or for next ages can be shared on discord.
For more information check wiki
Hints
- You can't mine wood and dirt without correct tool
- Your first goal is to find flint and hit stone with it
- Grass fibers can be obtained by breaking grass with sharp flint
- Look for deer, you need it for your first pickaxe
- Only deer with antlers drops correct item
- Primitive Smelter and Primitive Alloy Smelter needs chimneys for increasing temperature
- Each type of chimney can be up to 4 blocks high, otherwise it collapse
- Using reinforced chimney you can increase height up to 8 blocks, with 4 of each chimney
- Lead and Cassiterite can be gathered using Strainer
- It's recommended to use JEI
- You have to breed wild animals to get their domesticated versions
- Aurochs -> Cow
- Mouflon -> Sheep
- Fowl -> Chicken
- Wild Boar -> Pig
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.20.1, 1.21.3
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as ytech-1.20.1-0.0.2.jar — drop this file into the mods folder
- Download size: 1.2 MB
- Download link checked 26 Sept 2026 — working
These come from our own check of the pack file, not from the source page.