A-90: The Reaction Entity

Authentic recreation of the infamous A-90 entity from DOORS for Minecraft 1.21.11.

by Levs_KittneGame mechanics Mobs

Fabric

Loaders: Fabric
Downloads on Modrinth: 120
Followers on Modrinth: 1
version: 1
Updated: August 30, 2026Aug 30
Published: in 2026

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At a glance

Runs on Fabric

For Minecraft 1.21.11

Needed in the game and on the server

Latest version — 1.0.0 from August 30, 2026

Requires Fabric API

License MIT — free

Where it's needed

In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21.11

Adds the A-90 entity from Roblox DOORS (The Rooms) into Minecraft.

How it works:

Warning: A-90 appears on your screen with a glitch sound.
STOP Sign: When the red STOP sign appears in the center, freeze immediately. Do not walk, jump, or move your mouse.

Spoiler

Punishment: If you move during the STOP sign, A-90 attacks with a jumpscare, dealing 85% damage. Continuing to move results in instant death.

Commands: /a90 spawn to summon, /a90 stop to cancel.

FAQ

How to install A-90: The Reaction Entity?

Install Fabric for your Minecraft version, download A-90: The Reaction Entity 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 A-90: The Reaction Entity support?

A-90: The Reaction Entity has builds for Minecraft 1.21.11.

Is A-90: The Reaction Entity needed on the server?

Needed in the game and on the server

License and source

MIT Licensefree to use and share with credit to the author

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders