*grins broadly and laughs* Ahh dear, typical Aspies aren't we? Seeing as I have heard of such games before, I am lead to believe that this is just one of those 'things' that has no logical or rational drive behind it, and yet some people find it enjoyable! This enjoyment possible derives from a number of things, including the 'joy' of socialising, the 'joy' of sharing your favourite bands, the 'joy' of discovering what other people's favourite bands are and, most importantly in my humble opinion, the joy of finding a truly song that ends with, say, an x! Believe me: I looked!
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...though fire may burn & flames envelop me, I will arise from the ashes...