Writing Better Prompts for Pixel Art and Game Assets

Most of the difference between a messy generation and a usable sprite comes from the prompt. In the Voidless image generator, the controls already handle the view, style, size and palette, so the prompt has one job: describe the subject clearly. Here's a formula and examples you can copy.

The formula

[subject] + [one or two defining details], in one line.

• Subject: the thing itself. "a health potion", "a goblin archer".
• Details: what makes it this one. "red liquid, cork stopper", "green hood, short bow".

Set the rest with the controls instead of words: Dimension for the view (2D side view, Top Down, Isometric), Style for the technique, Size for pixel art or high resolution, and Colour Palette for the colours. Words that fight the controls (for example "isometric" in the prompt while Dimension is Top Down) confuse the model.

Characters (Type: Character)

• "a wizard with a purple robe and a crooked staff"
• "a green slime with a tiny crown"
• "a knight in silver armor with a red plume"

Items and icons (Type: Object)

• "a golden coin with a star stamp"
• "a steel sword with a leather grip"
• "a red health potion, cork stopper"

Tiles and textures

• In the image generator, choose Type: Tileset and describe the terrains: "grass and a cobblestone path".
• For a repeating texture, ask in the dashboard prompt box: "a seamless mossy stone texture".

UI (Type: UI)

• "a wooden button with a beveled edge"
• "a health bar frame with a heart icon"
• For a logo, set UI Mode to Game Title and put the title in quotes: "Moss Knight" in a carved stone font.

Keeping a set consistent

• Keep the same Style, Colour Palette and model for every asset in a set.
• Reuse a short style phrase if you add one, word for word.
• Save a look you like as a style in your library and pick it from the Style menu under My styles.

Fixing common problems

• It ignored part of the prompt? Cut it down to the subject and one detail, or try GPT-Image 2.5, which follows long prompts best.
• Too busy? Remove adjectives. At small sizes, fewer details read better.
• Wrong view? Check the Dimension control, and remove view words from the prompt.
• A set looks mismatched? Compare the Style, Palette and model on each asset; one of them usually differs.

The rules in short

1. Short beats long. The prompt holds 300 characters, and you rarely need half of that.
2. Describe the subject; let the controls set view and style.
3. One subject per prompt.
4. Change one word at a time so you learn what each change does.

Try the formula in the AI pixel art generator.