I don't want to make unnecessary threads so I'm just going to put this here...
I was bored and was browsing system16, and saw some pretty weird konami games, such as Popn' stage and DDR Karaoke Mix(wtf?) I'm sure this is old news to everyone, but has anyone ever actually seen those? Is it possible its still somewhere in the corners of Japanese arcades?
System 16 - Bemani Karaoke Hardware (Konami)