SCP 303 Mod is built for players who want doorways to feel dangerous again. It adds SCP-303, The Doorman, an invisible humanoid creature from the SCP universe that can appear after a door is closed. You never get a clean visual warning; instead, the mod leans on deep growling, fear effects, and a sudden, aggressive attack if the door is opened. For horror-focused survival play, that single mechanic changes how cautiously you move through enclosed spaces.
Key Features
- Introduces SCP-303, an invisible monster that has a 5% chance to spawn when a door is closed.
- Spawning is limited to non-Peaceful difficulty and only works while you are in Survival or Adventure mode.
- Only one SCP-303 can exist in the world at a time, keeping the encounter rare and specific.
- The creature cannot be seen, but its presence is signaled by deep growling sounds from the other side of a door.
- Getting within 4 blocks can trigger the message "You're too afraid to open the door," reinforcing the fear mechanic before the encounter starts.
- Nearby players are hit with strong debuffs including slowness, weakness, and mining fatigue, with nausea added while SCP-303 is active within 6 blocks.
- Opening a door with SCP-303 behind it causes a loud scare sound, brief blindness, and turns the creature aggressive.
- Once hostile, SCP-303 moves quickly and deals heavy damage in combat.
Screenshots
How to Install
- Use Minecraft Forge on a supported version: 1.20.1, 1.20, 1.19.4, or 1.19.2.
- Install GeckoLib in the same Forge setup, since it is required by the mod.
- Add SCP 303 Mod to that Forge profile and launch the game on a supported version.
Requirements
| Item | Details |
|---|---|
| Mod Loader | Forge |
| Dependencies | Minecraft Forge, GeckoLib Mod |
| Minecraft Version | 1.20.1, 1.20, 1.19.4, 1.19.2 |
Pros & Cons
Pros
- Adds a clear horror mechanic centered on doors rather than constant mob pressure.
- Uses invisibility, sound cues, and fear effects to make encounters feel tense without relying on visuals alone.
- Strong debuffs, fast movement, and heavy damage give the creature real threat once triggered.
Cons
- Only works on Forge.
- The creature does not spawn in Peaceful and only appears in Survival or Adventure mode.
- Only one SCP-303 can exist in the world at a time, so encounters are intentionally limited.
Download
Always download mods from official sources to stay safe.
FAQ
What does SCP 303 Mod add to Minecraft?
It adds SCP-303, also known as The Doorman, an invisible humanoid monster from the SCP universe that can appear when a door is closed and attack after the door is opened.
When can SCP-303 spawn?
SCP-303 has a 5% chance to spawn when you close a door, but only if the game is not set to Peaceful and you are playing in Survival or Adventure mode.
What do I need to run SCP 303 Mod?
You need Minecraft Forge and GeckoLib Mod, and the supported Minecraft versions listed for the mod are 1.20.1, 1.20, 1.19.4, and 1.19.2.
