aldegad/sprite-gen is a Python pipeline that takes a single drawing and produces 2D game sprites and animation atlases. The latest release in the repository is v3.15.0. The provided records do not list any changes for this version, so no specific changes can be described. The tool is provided in the form of a skill used with Codex and Claude.
It addresses the problem that asking an image model directly for a sprite sheet can change the face from frame to frame or leave the grid misaligned. The pipeline organizes the drawing into rows per state, cleans up the alpha information that carries transparency, then extracts frames to build a runtime atlas. A runtime atlas is an image that bundles multiple frames together so that they can be loaded and used in a game. So sprite-gen's role is closer to tidying up the frames of a generated image and bundling them into a form that is convenient to use in a game than to drawing the picture itself. The repository is written in Python and uses the Apache-2.0 license.
However, with only the provided information, it is not possible to judge the specific changes in v3.15.0 or the quality of the output. What can be confirmed is the chain of processing steps: from a single drawing to per-state organization, frame extraction, and atlas generation. So this project is better seen as a tool that helps with post-processing generated images and converting them for games than as a replacement for animation production as a whole.