This question and this question bring up an interesting conundrum of the Arqade StackExchange. Both questions, one about Video Game Music, and the other about Twitch-Played Video Games, are tangentally related to Video Games as a whole. They do not ask a question about a specific video game or the mechanics of that game, but they touch upon them, and possibly reference the game specifically.
Many different forms of media have tangental reationships to video games - Video Game Movies, Video Game Music (both tribute and directly from video games), Video Game Streaming, all tangental to actual video games, but with content that often relates TO video games (are the SMB Movie Goombas anything like the ones in the game? Did Johnathan Coulton write any video game music other than "Still Alive"? What IS Start9?), and inevitably, those questions are going to show up here.
I am not promoting any specific course of action here, but I think this question needs to be addressed.
How do we deal with questions about other media that are tangentally related to video games?