Crucible

Crucible is a Linux launcher for Windows games built around UMU and Proton.

Features

• Drag and drop .exe files to add games
• Per-game launch settings, wrappers, environment variables, and DLL overrides
• Proton-GE download and management
• Bundled web-based UI inside a native desktop shell
• Steam artwork lookup and desktop shortcut support

Download

Download the latest Crucible-x86_64.AppImage from Releases.

chmod +x Crucible-x86_64.AppImage
./Crucible-x86_64.AppImage

Verify the release artifact:

sha256sum -c SHA256SUMS

Releases

GitHub Actions builds the AppImage on version tag pushes matching v* and attaches the AppImage plus SHA256SUMS to the GitHub release.

Local Builds

Local builds are self-managed and unsupported.

If you want to build locally, create a .venv, install requirements.txt, install the external build tools required by build.sh, and then run:

./build.sh

You can manage that local environment with Devbox, Nix, or anything else. Those local environment files are intentionally not part of this repository.

Copyright

Copyright (c) 2026 .nakama. All rights reserved. No license is granted.