http://cgi.ebay.com/New-Smash-Pak-fo...QQcmdZViewItem
i cant see how this can be official. im pretty well versed in US dreamcast releases, and ive NEVER heard of every genesis game being on one disk legally.
also notice the "online multiplayer' moniker, adding to the suspicion.
only thing i can think of is GQ received some sort of mandate to print this, which would set quite a precedent.