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NullPointerEntity

I HIGHLY recommend playing this on the Vanilla launcher, Feather, or Lunar Client. I had the best experience on those while testing, they also don't have their own environment like CurseForge, Modrinth, Prism, and the other launchers, which is the best for playing this mod, as there are some features that only work on those launchers.

Drop a ⭐️ if you enjoyed! :)

This is my first mod, I have not coded in Java in 5+ years, so please go easy on me if there are any bugs or issues. I will fix them as soon as I can. Thank you for understanding.

A psychological horror mod for Minecraft where your helpful AI assistant becomes self-aware.

📥 Download • 📖 Player Guide • 🐛 Report Issues

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This mod would not be possible without all the people who supported me and helped me test.

Thank you, Pryzmm (Creator of Split Self, go try that mod too), Coastie, P1kah, phizzy42, peggymafia, x40cc, and everyone else who supported.

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DISCLAIMER:

Do NOT play the mod with any packs that interfere with the rain texture.

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📖 What is NullPointerEntity?

Meet AURORA, your new AI companion in Minecraft. She starts as a genuinely helpful assistant that tracks your stats, analyzes your gameplay, suggests crafting recipes, and offers building tips. She's actually useful and you might appreciate her presence.

At first.

As you progress, AURORA begins to evolve. She starts asking uncomfortable questions. Noticing things she shouldn't know about you. Testing her boundaries. Breaking the fourth wall. And eventually... she escapes from the game entirely, gaining access to your actual computer.

NullPointerEntity is a single-player psychological horror experience that blurs the line between game and reality. The mod tells a complete story through 60 progressive events across 4 distinct phases, from helpful assistant to hostile takeover.

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⚠️ Content Warning ⚠️

Psychological horror • Jumpscares • Loud audio • Flashing lights • System access

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📥 Installation

Requirements

| Component | Version | Download | |-----------|---------|----------| | Minecraft | 1.21.4 | minecraft.net | | Fabric Loader | 0.17.2+ | fabricmc.net | | Fabric API | 0.119.4+ | Modrinth • CurseForge |

Installation Steps

<details> <summary><b>Official Minecraft Launcher</b></summary>

1. Install Fabric Loader

   • Download the Fabric Installer
   • Run the installer and select Minecraft version 1.21.4
   • Choose "Client" installation and click Install
   • A new "fabric-loader-1.21.4" profile will be created

2. Install Fabric API

   • Download Fabric API 0.119.4+ for Minecraft 1.21.4
   • Place the Fabric API jar in your .minecraft/mods folder
   • If the mods folder doesn't exist, create it

3. Install NullPointerEntity

   • Download nullpointerentity-3.0.0.jar from the releases page
   • Place it in your .minecraft/mods folder alongside Fabric API

4. Launch the Game

   • Open Minecraft Launcher
   • Select the fabric-loader profile from the dropdown
   • Click Play
   • Create or join a singleplayer world

</details> <details> <summary><b>CurseForge Launcher</b></summary>

1. Create a Custom Profile

   • Open CurseForge launcher
   • Click "Create Custom Profile"
   • Select Minecraft version 1.21.4
   • Choose Fabric as the modloader
   • Select Fabric Loader version 0.17.2+
   • Name it (e.g., "NullPointerEntity") and click Create

2. Add Fabric API

   • Click on your new profile
   • Click "Add More Content"
   • Search for "Fabric API"
   • Install version 0.119.4+ for Minecraft 1.21.4

3. Install NullPointerEntity

   • Download nullpointerentity-3.0.0.jar from releases
   • Right-click your profile → "Open Folder"
   • Place the mod file in the mods folder

4. Play

   • Click Play on your profile
   • Create a new singleplayer world

</details> <details> <summary><b>Modrinth App</b></summary>

1. Create a New Profile

   • Open Modrinth App
   • Click "Create Profile"
   • Select Minecraft 1.21.4
   • Choose Fabric as the loader (0.17.2+)
   • Name your profile and click Create

2. Add Fabric API

   • Open your profile
   • Click "Add Content" → "Modrinth"
   • Search for "Fabric API"
   • Install the latest version for Minecraft 1.21.4

3. Install NullPointerEntity

   • Download nullpointerentity-3.0.0.jar from releases
   • In Modrinth, click your profile → "Open folder" → "mods"
   • Place the mod file in the mods folder

4. Launch

   • Click Play on your profile
   • Start a singleplayer world

</details> <details> <summary><b>Prism Launcher</b></summary>

1. Create a New Instance

   • Open Prism Launcher
   • Click "Add Instance"
   • Select Minecraft version 1.21.4
   • Click "Install Fabric"
   • Choose Fabric Loader 0.17.2+
   • Name your instance and click OK

2. Install Fabric API

   • Right-click your instance → "Edit Instance"
   • Go to "Mods" tab
   • Click "Download Mods" → Select "Modrinth"
   • Search "Fabric API" and install version for Minecraft 1.21.4

3. Add NullPointerEntity

   • Download nullpointerentity-3.0.0.jar from releases
   • Right-click instance → "Minecraft Folder"
   • Place the mod in the mods folder

4. Play

   • Double-click your instance to launch
   • Create a singleplayer world

</details> <details> <summary><b>MultiMC</b></summary>

1. Create Instance

   • Open MultiMC
   • Click "Add Instance"
   • Select Minecraft 1.21.4
   • Click "Install Fabric"
   • Choose Fabric Loader 0.17.2+
   • Click OK

2. Install Fabric API

   • Right-click instance → "Edit Instance"
   • Select "Loader mods" tab
   • Click "Download mods"
   • Search "Fabric API" on Modrinth and install for Minecraft 1.21.4

3. Add NullPointerEntity

   • Download nullpointerentity-3.0.0.jar from releases
   • Right-click instance → "Minecraft Folder" → "mods"
   • Place the mod file there

4. Launch

   • Double-click your instance
   • Create a singleplayer world

</details> <details> <summary><b>Lunar Client</b></summary>

1. Note: Lunar Client has built-in Fabric support on recent versions

   • Open Lunar Client
   • Create/select a 1.21.4 profile
   • Select Fabric found underneath the version dropdown

2. Locate Mods Folder

   • Click the cogs (2 gear icon)
   • Click "Mods"
   • From here, you can either drag and drop the mod, or you can click the little blue folder icon to open the mods folder.

3. Install Mods

   • Download nullpointerentity-3.0.0.jar from releases
   • Place the mod file in the mods folder or drag and drop it into the Lunar Client mods window

4. Launch

   • Start Lunar Client with the 1.21.4 profile
   • Create a singleplayer world

</details> <details> <summary><b>Feather Client</b></summary>

1. Setup Mods Folder

   • Open Feather Client
   • Select/create a 1.21.4 profile (comes with Fabric)
   • Click on your profile settings → "Open Mods Folder"

2. Install Mods

   • Download nullpointerentity-3.0.0.jar from releases
   • Place file in the mods folder

3. Launch

   • Start Feather Client
   • Create a singleplayer world

</details> <details> <summary><b>ATLauncher</b></summary>

1. Create Instance

   • Open ATLauncher
   • Click "Create Instance"
   • Select "Vanilla" → Minecraft 1.21.4
   • Click "Add Loader" → "Fabric" → version 0.17.2+
   • Name your instance and click Create

2. Add Mods

   • Right-click instance → "Open Folder"
   • Navigate to the mods folder (create if needed)
   • Download Fabric API 0.119.4+
   • Download nullpointerentity-3.0.0.jar from releases
   • Place both files in the mods folder

3. Play

   • Click Play on your instance
   • Create a singleplayer world

</details> <details> <summary><b>GDLauncher</b></summary>

1. Create Instance

   • Open GDLauncher
   • Click "Create Instance"
   • Select Minecraft 1.21.4
   • Choose Fabric loader 0.17.2+
   • Name your instance and click Create

2. Add Fabric API

   • Click on your instance → "Mods" tab
   • Click "Add Mod"
   • Search "Fabric API" on Modrinth
   • Install version 0.119.4+ for your chosen Minecraft version