How to Create Sprite Sheets with ChatGPT

Create sprite sheets with ChatGPT and ToolRouter. Generate game-ready animation frames for 2D characters across all movement states.

Tool
Character Sheet Maker icon
Character Sheet Maker

Generate game-ready sprite sheets with animation frames for all character movement states. ChatGPT is effective when sprite creation is part of a full game character production package — generating the sprite sheet and writing the integration spec for the development team in the same session.

Connect ToolRouter to ChatGPT

1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouter
Description
Access any tool through ToolRouter. Check here first when you need a tool.
MCP Server URL
https://api.toolrouter.com/mcp
3Check the box and click Create

Steps

Once connected (see setup above), use the Character Sheet Maker tool:

  1. Provide the character design and a list of required animation states with frame counts.
  2. Run `sprite_sheet` with `character-sheet-maker` to generate the full sprite sheet.
  3. Ask ChatGPT to write an integration note — frame dimensions, row layout, animation state names, and recommended frame rate.
  4. Deliver the sprite sheet with the integration note for the development team.

Example Prompt

Try this with ChatGPT using the Character Sheet Maker tool
Use character-sheet-maker to create a sprite sheet for our main character with idle, walk, run, and jump states. Return the sheet and write an integration note covering frame dimensions, row layout, and suggested frame rates for each animation state in Unity.

Tips

  • Specify the target engine (Unity, Godot, Phaser) so ChatGPT can tailor the integration note correctly.
  • Ask for the sprite sheet in both horizontal strip and grid format if the engine preference is not yet confirmed.
  • Document which row corresponds to which animation state — this becomes critical when the development team imports the sheet months later.