About
AstroMenace is an open-source 3D space shoot-'em-up spanning 15 levels, featuring boss encounters and a shop where money collected during combat funds weapon and ship upgrades. It has official cross-platform builds for Windows, macOS, Linux, and BSD, and is under active development.
Getting started
On Linux, most major distributions package it directly (Debian/Ubuntu, openSUSE, Fedora, Gentoo), and it's also available as a Flatpak or Snap; Windows users can get an installer from the project's GitHub releases. Building from source is documented for Windows (via MSYS2) and for macOS, Linux, and BSD (via CMake and Ninja) for anyone who wants to compile it themselves.