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✓ VerifiedGameplay & overhauls

Psi

by Vazkii · for Minecraft

Psi is a mod about spell programming, inspired by Mahouka

87KDownloads
30d agoLast updated
LicenseRef-Psi-LicenseLicense
Fabric · Forge +1Loaders

About Psi

From Modrinth

Psi is a mod about spell programming, inspired by Mahouka


About

Warning: Psi Requires Patchouli for 1.16.5 and more recent versions. Older versions require AutoRegLib

Psi is a magical tech spell programming mod inspired by Mahouka Kokou no Rettousei. Don't worry if that doesn't make any sense.

The core of Psi is a system where you can create action sequences ("Spells") to be executed in the world. This system is followed by a leveling system containing ingame documentation and tutorials of the various concepts and pieces you'll get. The mod makes use of basic mathematical concepts, such as Vectors in its systems, which allows for great flexibility on what spells can do.

Psi spells can be shared and copied to and from outside sources, using ingame sharing tools. The main repository for user made psi spells is the Psi Spell Compendium on reddit.

Psi...

  • Is very flexible on what it allows you to do;
  • Encourages creativity and problem solving;
  • Ties in the reward to the creation process;
  • Can do some pretty cool stuff.

Learn more about Psi today

Visit the Official Website


Highlights

From source data

Game versions

Supports 8 Minecraft versions, the newest being 1.21.1.

Loaders

Runs on Fabric, Forge and NeoForge.

Footprint

Rated a light load on a server.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Gameplay & overhauls

New mechanics, content and overhauls that change how the game plays.

Runs on your server

From source side support

Modrinth lists Psi as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
FabricForgeNeoForge
Runs on
Serverrequired on the server
Game versions
1.21.1 and 7 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
  • ✓AuthorVazkii, as published on Modrinth
  • ✓LicenseLicenseRef-Psi-LicenseFree

Psi, answered

Generated from the mod’s own source data.

Do my players need to install Psi?

Modrinth lists Psi as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Fabric, Forge and NeoForge.

Is it free?

Yes. Psi is free to download from Modrinth. Its license is LicenseRef-Psi-License.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Psi on a Minecraft server.

Deploy in about a minute from $4.20 a month, then add Psi in one click.