sprite-gen
Generate clean 2D game sprites and animation atlases: state rows, alpha cleanup, frame extraction, runtime atlases.
- GitHub stars
- 2,951 (GitHub stars as of 2026-10-21)
- License
- Apache-2.0
- Last commit
- 2026/10/21
- By
- aldegad
Listed from the author's README. GameSkill has not run this end to end yet. Agent support and install steps are as documented by the author.
Install
git clone https://github.com/aldegad/sprite-gen.git
cd sprite-gen
python3 -m venv .venv && source .venv/bin/activate
pip install -e .
sprite-gen --helpsprite-gen prepare --out-dir <run> --character-id <id> --base-image base.png
sprite-gen gen-set --run-dir <run> --provider codex
sprite-gen extract --run-dir <run>
sprite-gen compose-atlas --run-dir <run>Commands are copied from the project's README. Check the repository before running anything on your machine.
What you get
- A sprite-sheet with alpha plus manifest.json for your engine
- State rows such as idle, walk, run, jump and attack from one base image
- Optional loop repair for walk, run and jump cycles
Good fit
- Turning one character still into game-ready animation atlases
- 2D games in any engine
Not for
- 3D assets
Overview
sprite-gen is a component-row pipeline for 2D characters. You start from one base image. The tool prepares prompts and guides, generates every animation state row, removes the chroma background, extracts frames and composes a runtime atlas with a manifest.
A second path turns short generated videos into transparent loops, with cycle-length alignment across directions. It works as a Codex or Claude skill, and the CLI can also be used on its own.
Requirements
- Python 3 with a virtualenv (the only supported interpreter)
- For video loops: ffmpeg, img2webp and a Grok login or XAI_API_KEY
FAQ
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