I like the name. It's brandable. The .net is taken and I believe that there is a website running. If you want to sell it now, you can contact the .net owner. Or better develop it yourself if you are into gaming. Maybe you can run a gaming forum. Not sure about the value though because brandable names are hard to appraise.
Name is brandable as an arcade or gaming site. It is hard to appraise. But it may worth low $xxx if you can find an end user. I would rather develop it.
Unless you develop it I predict this domain name will be dropped by you within a year or two without any offers. Unless you can manage to get mid $xx from the owners of GamingCave.net, but it looks like not much activity is going on over there.