Since Xbox-Live offers classic (I mean real classic and not claims of classic from just 10 years ago) games it would be cool to get QUARTET from SEGA. The Arcade Version was amazing, along with an awesome sountrack. It's on YouTube but most of the videos are the down convert to consoles, there's one or two Arcade videos. I'll post the link to one so you can see fun this game is.
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With technology today I'd really like the original arcade above on Xbox Live, and not the Console port version.