Kotatsu's Basic Blocks
This mod adds a lot of coloured blocks for building!
- Loaders
- Fabric
- Downloads on Modrinth
- 59
- Followers on Modrinth
- 0
- versions
- 3
- Updated
- October 3, 2026Oct 3
- Published
- in 2026
At a glance
Needed both in the game and on the server
What does this mod add?

This mod currently adds 834 new coloured blocks, designed for building and decorating in Creative mode. These blocks aren't yet craftable in Survival, but that's coming in a future update!
- A new colored lights system was implemented in Helium (2a ver.). It can be disabled by accessing the mod's menu with K or by using the Menu Mod
The Colored Light System (CLSys)
The system is known for being a little buggy, so it should be used carefully. Blending multiple different lights might have a weird effect or just plainly cancel the tint effect!

Why did I make this?
I remembered a certain decoration mod from years back that was hugely popular for adding tons of colored blocks, and I hadn't seen anything quite like it since. So I decided to bring that idea back and make my own version!
Roadmap
Objectives!
- [ ]🎨 More block variations and textures
- [ ]🛠️ Survival-mode crafting recipes
- [ ]🏷️ Hex code labels/descriptions for each block colour
a Kotatsu project®
FAQ
How to install Kotatsu's Basic Blocks?
Install Fabric for your Minecraft version, download Kotatsu's Basic Blocks for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Kotatsu's Basic Blocks support?
Kotatsu's Basic Blocks has builds for Minecraft 1.21.10.
Is Kotatsu's Basic Blocks needed on the server?
Needed in the game and on the server