Stable Diffusion Prompts for Game Assets

Generating high-quality game assets can be time-consuming and challenging. However, with recent advances in AI image generation models like Stable Diffusion, it is now possible to quickly create game assets by providing text prompts.

In this article, I will provide a comprehensive guide on writing effective Stable Diffusion prompts to generate 2D and 3D game assets. I will cover prompt structure, formatting, tips and tricks, as well as provide 15 example prompts across various game asset categories.

Prompt Structure

When writing Stable Diffusion prompts, it is important to structure them properly so the AI understands exactly what you want to generate. Here is a basic prompt structure to follow:

[Subject], [Style], [Viewpoint/Framing], [Medium/Rendering], [Extra Details]

For example:

Cyberpunk character portrait, trending on artstation, digital painting

Let’s break down each component:

  • Subject: The main focus of the image, like “character”, “environment”, “vehicle”, etc.
  • Style: Artistic style you want like “cartoon”, “pixel art”, “low poly”. Reference a specific game or artist for consistency.
  • Viewpoint/Framing: Composition of the image, like “side view”, “close up shot”, “aerial view”.
  • Medium/Rendering: The artistic medium or rendering style, like “digital painting”, “3D render”, “vector art”.
  • Extra Details: Any additional descriptive details about lighting, colors, props, etc.

Formatting Tips

Here are some key formatting tips:

  • Use double parentheses around terms you want the AI to ignore like ((this))
  • Separate clauses with commas
  • Use present tense action verbs like “a man stands in a forest”
  • Capitalize proper nouns only
  • Use single spaces between words/clauses

Advanced Prompting Tips

To further improve results, leverage these advanced prompting techniques:

  • Weighted Sampling: Use a colon and number to weight terms, like “nature:2” to bias generation towards that term
  • Image Inserts: Insert an example image with <image:INSERT_URL_HERE> to guide the AI
  • Negative Prompts: Add --negativeprompt flags to exclude unwanted elements from generation like --negativeprompt:poorly drawn

15 Stable Diffusion Prompts for Game Assets

Below are 15 prompt examples covering characters, environments, props, textures, and UI elements.

Characters

Cyberpunk protagonist character full body view, trending on artstation HQ

armored orc warrior wielding a battleaxe, dynamic pose, unreal engine digital rendering

Cartoon mushroom character facial portrait, soft lighting, Nintendo style

Environments

Japanese zen garden environment, aerial view, watercolor painting

mystical ruins environment with vines and vegetation, isometric view, digital matte painting

Futuristic city streets, night time, cinematic lighting, Unity render

Props

mythical sword and shield set, detailed craftsmanship, epic lighting, digital painting

Potions and elixirs sprite sheet, 16 icons, top down view, flat vector illustration

Textures

Seamless futuristic metal panel texture, scratched paint, 4k resolution

stone floor texture with moss and cracks, procedural material, substance designer

Stylized water texture, cartoon waves animation, looping gif

UI/Icons

Inventory icon set sprite sheet, 16 icons, isometric view, vector illustration

futuristic hologram buttons and UI elements, cinematic lighting, detailed panels

Gothic frame decoration icons, black and gold baroque style, vector image

Conclusion

I hope this guide gives you a solid foundation for writing effective prompts to generate 2D and 3D game assets with Stable Diffusion AI. Properly structuring prompts, using formatting best practices, and leveraging advanced techniques will produce higher quality, consistent results.

Feel free to take inspiration from the 15 prompt examples provided across characters, environments, props, textures and UI elements. Don’t be afraid to continually iterate on prompts and guide the AI by inserting example images.

With some practice, you’ll be able to rapidly create game assets to supplement your development workflow. Stable Diffusion eliminates much of the heavy lifting involved in asset creation, allowing you to focus creativity on designing gameplay systems and mechanics.

Let me know in the comments if you have any other questions!

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