OpenSUSE Tumbleweed, YaST is the deity I pray to

I’m going to suggest one I’m not seeing here; OpenSUSE Tumbleweed. I cut my teeth on Tumbleweed for years, and it has the pros of a rolling release while YaST provides the tools needed to have a stable base that rivals that of Ubuntu. Gaming is extremely easy to get set up, and you can choose pretty much any major desktop, although I recommend XFCE.