Several of my Save the Universe testers have suggested that the rules behind Save the Universe would provide a useful platform for other games. To make that easier, I've set up the core rules out of Save the Universe in an independent document. At least for now, I'm calling this the SAVE System, which you can find on itch.io here.
SAVE is available under the Creative Commons license. If you use SAVE in your own project, or if you see SAVE in the wild, let me know and I'll spread the word!