ComfyUI Extension: CrasH Utils

Authored by chrish-slingshot

Created

Updated

13 stars

A mixture of effects and quality of life nodes. Nodes: ImageGlitcher (gives an image a cool glitchy effect), ColorStylizer (highlights a single color in an image), QueryLocalLLM (queries a local LLM API though oobabooga), SDXLReslution (resolution picker for the standard SDXL resolutions, the complete list), SDXLResolutionSplit (splits the SDXL resolution into width and height).

Custom Nodes (7)

README

CrasH Utils Custom Nodes

A collection of utility nodes and games for ComfyUI to enhance your workflow and keep you entertained during long generation times!

🎮 Games Collection

Play games directly in ComfyUI while waiting for image generation! All games run entirely in the browser with no external dependencies.

Controls (All Games)

  • Click the game canvas to activate keyboard input
  • Click outside the node to release keyboard control
  • This allows seamless switching between gaming and using ComfyUI

🐍 Snake Game

Classic Nokia-style snake game with retro green-screen graphics!

Controls: Arrow keys or WASD to move, Space to pause/restart

Features:

  • Authentic Nokia 3210 aesthetic
  • Wrap-around edges
  • Score tracking
  • Game over with instant restart
<img width="356" height="395" alt="image" src="https://github.com/user-attachments/assets/aedee4ce-15ff-433c-a877-35ff7e61da6e" />

🧱 Tetris Game

Classic block-stacking puzzle game!

Controls:

  • Arrow Left/Right: Move piece
  • Arrow Down: Soft drop
  • Arrow Up: Rotate
  • Space: Hard drop

Features:

  • Standard Tetris mechanics
  • Score and level progression
  • Next piece preview
  • Line clear animations

🦖 Dino Game

Chrome's famous offline dinosaur runner!

Controls: Space or Up Arrow to jump

Features:

  • Endless runner gameplay
  • Increasing difficulty
  • Obstacle variety
  • High score tracking

👾 Space Invaders

Classic arcade shooter!

Controls:

  • Arrow Left/Right: Move ship
  • Space: Shoot

Features:

  • Wave-based gameplay
  • Multiple enemy types
  • Score tracking
  • Classic arcade feel

🔫 DOOM

The legendary FPS - play the full DOOM Shareware in your browser!

🎮 Automatic Setup (Recommended)

Just add the node - files download automatically!

  • First time: Auto-downloads DOOM Shareware v1.9 (~2MB, 30-60 seconds)
  • Multiple sources: Tries Doomworld, archive.org, and other mirrors automatically
  • After download: DOOM launches automatically - no setup needed!
  • Legal: Official free shareware version, completely legal to distribute

📦 Manual Setup (Optional)

If auto-download fails, download manually from any of these sources:

  1. Download DOOM Shareware v1.9:

    • Doomworld: https://www.doomworld.com/idgames/idstuff/doom/win95/doom19s
    • Archive.org: https://archive.org/details/DoomsharewareEpisode
    • Or search for "DOOM Shareware 1.9"

  2. Extract the files: Find DOOM.EXE and DOOM1.WAD (or DOOM.WAD)

  3. Place files in: ComfyUI/custom_nodes/CrasHUtils/doom/

  4. Restart: Restart ComfyUI and refresh your browser

🎹 DOOM Controls

Standard DOOM controls apply - arrow keys to move, Ctrl to shoot, Space to open doors, etc.

⚠️ Troubleshooting

  • If keyboard gets stuck: Click outside the node to release control
  • If download fails: Try manual setup above
  • Check browser console for detailed error messages

🖼️ Image Processing Nodes

🎨 Image Glitcher

Create authentic glitch art effects with chromatic aberration and scanlines!

Based on the HTML image glitcher by Felix Turner (original demo).

image

Parameters:

  • glitchiness (0-100): Controls glitch corruption and chromatic aberration intensity
  • brightness (0-100): Brightens the image, useful with scanlines enabled
  • scanlines (toggle): Adds authentic CRT TV scanlines

Usage: Simply connect an image input and adjust parameters to taste.

ComfyUI_temp_cknmh_000362_

🌈 Color Stylizer

Selective color isolation - pick a single color and desaturate everything else!

Perfect for creating dramatic color pop effects like in Sin City or Schindler's List.

srg_sdxl_preview_temp_utykd_00003_ ComfyUI_temp_tsubu_00004_

Parameters:

  • target_color: The color to preserve (hex or RGB)
  • tolerance: How closely colors must match to be preserved
  • desaturation: How much to desaturate non-matching colors

Usage: Connect an image and specify which color to keep while everything else becomes grayscale.

🤖 AI & Utility Nodes

💬 Query Local LLM

Send queries to OpenAI-compatible APIs and get text responses in your workflow!

Perfect for prompt generation, image description, or any text processing task.

image

Features:

  • Compatible with OpenAI API and local LLMs (LM Studio, Ollama, text-generation-webui, etc.)
  • Customizable endpoints
  • System and user message support
  • Temperature and token control

Usage:

  1. Set your API endpoint (default: OpenAI)
  2. Configure your prompt
  3. Get text output to use in your workflow

Supported Backends:

  • OpenAI API
  • LM Studio (local)
  • Ollama (local)
  • text-generation-webui (local)
  • Any OpenAI-compatible API

📐 SDXL Workflow Nodes

📏 SDXL Resolution Picker

Choose from all pre-trained SDXL resolutions in one convenient dropdown!

Unlike other resolution pickers, this includes the complete list of SDXL-trained resolutions for optimal quality.

image image

Features:

  • All official SDXL resolutions (1024×1024, 1152×896, 1216×832, etc.)
  • Aspect ratio labels
  • Portrait, landscape, and square formats
  • Single selection output

Why use this? SDXL was trained on specific resolutions - using them gives better results than arbitrary sizes!

✂️ SDXL Resolution Split

Split SDXL Resolution output into separate width and height values.

image

Purpose: Reduces workflow clutter by passing resolution as a single connection, then splitting where needed.

Usage:

  1. Connect SDXL Resolution Picker output to this node
  2. Get separate width and height outputs
  3. Connect to your Empty Latent Image or other nodes

Benefit: One connection instead of two = cleaner workflow graphs!

📥 Installation

! Recommended ! - Install through ComfyUI Manager, search for "CrasH Utils".

Manual:

  1. Clone this repo into your ComfyUI/custom_nodes/ directory:

    cd ComfyUI/custom_nodes/
git clone https://github.com/chrish-slingshot/CrasHUtils.git

  2. Restart ComfyUI

  3. The nodes will appear in the "CrasH Utils" category

No additional dependencies required - everything runs out of the box!

🎯 Categories

Nodes are organized into categories in ComfyUI:

  • CrasH Utils/Games - All game nodes
  • CrasH Utils/Image - Image processing nodes
  • CrasH Utils/AI - LLM and AI nodes
  • CrasH Utils/SDXL - SDXL workflow helpers
  • CrasH Utils/Loaders - Checkpoint utilities

🐛 Issues & Contributions

Found a bug or have a feature request? Open an issue on GitHub!

Pull requests welcome - especially for new games or utility nodes!

📝 Credits

  • Image Glitcher based on work by Felix Turner
  • DOOM powered by js-dos emulator
  • DOOM Shareware © id Software (free shareware version)

⚖️ License

MIT License - feel free to use, modify, and distribute!

DOOM Shareware is distributed under id Software's original shareware license.