The Quantum Star SE game transferred its repository over to the Quantum Game Library to be available for all. The Library components are common elements that most games will need. The components are mostly independent of each other, so PBBG game developers can pick and choose which game components they want to have.
The Quantum Star SE repository has moved and you can download the Quantum Star: Generations from the quantum-star.com web site.
These details are provided for information only. No information here is legal advice and should not be used as such.