




disclaimer: i made this in 10 minutes. do not expect quality
Only Gen One 2
The last time i made this, i only spent 5 minutes. This time, i spent 10 minutes! This datapack produces the least amount of problems for both the user and myself. Just install it like any other datapack. No resourcepack requirements. The later gen evolutions are still enabled. The regional forms are not.
Requires Cobblemon 1.7 or later. It uses the most recent spawn data which might not be compatible with earlier versions.
What does it do
- Only generation 1 pokemon will spawn.
- This still does not include legendaries or mythicals.
- This was made using only the base mod's files.
- Now it doesn't include regionals!
- Your only starters are Bulbasaur, Charmander, Squirtle, Pikachu, and Eevee
- I figured somebody was gonna want the Let's Go starters.
- Keeps the special forms that are exclusive to Kanto.
- No Valencian Butterfree
- Arbok, Magikarp, Squirtle, and Pikachu cosmetics/forms are still in.
What it doesn't do
- Remove the newer pokemon from the mod.
- Your game might blow up idk.
- This hopefully makes it compatible with other addons.
- Keep the movesets as they were in generation 1.
- It's complicated lol. it would have taken me more than 10 minutes to redistribute the movelists
- Prevent evolutions that appear in the later games. Like Magmortar or similar.
- I'd have to dig through the species files and remove the evolution data. That would have taken more than 10 minutes.
Why
- Somebody asked me for help with the old one. And i deleted the first datapack i'm pretty sure. So i had to remake it in 5 minute again for them, but i thought of a solution to get rid of the regional forms.
- It only took me like 10 minutes.
Technical stuff
This datapack uses a filter to prevent cobblemon's original spawn pool world and species features folders from loading. Then i load my own folders after. The spawns only contain the base mod's gen 1 pokemon. And the species features only contain the arbok patterns, magikarp jump patterns, and pikachu hats.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as Only_Gen_One_2.zip
- Download size: 128 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.