games-arcade/ultrastar-ng is now obsolete and should be replaced inside the portage tree by games-arcade/performous. You will find the official updated ebuild attached please feel free to modify it according the portage ebuild quality requirement Reproducible: Always Steps to Reproduce:
Created attachment 196864 [details] performous-0.3.1.ebuild
*** This bug has been marked as a duplicate of bug 245452 ***