Which Stack Exchange site is appropriate for such a question?
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None currently. I had a proposal in Area51 for it but it appears to have been closed.
I recommend Gaming's Chat, there are (mostly) nice people that love to talk about games there.
The Stack Exchange sites are a place for asking questions which have real, objective answers. It is not a full-on replacement for a discussion forum. Not all things that you could talk about on a forum are legitimate SE questions.