Can we ask questions about specific games for Ubuntu on AskUbuntu, or should we ask them on Arqade instead? I would like to ask how to get a game running but I don't know which site I should put it on.
I have asked only one question on this site. Its resolution was an ubuntu-specific configuration that I found in an Ubuntu bug report. It's a 3 times notable question with now 2500 views. It is of very general interest to the community. It was and is still closed as off-topic.
So apparently, here as elsewhere on stack exchange sites, one can always ask.
Nothing prevented me from asking that question.