[Gemini-Phoenix]

For the SNES, there are several PAL "big box" versions of certain games, which come with a Player's Guide. For example, Super Metroid, Terranigma, Starwing, and some others I forget... I'm sure these all technically count as Collector's Editons?

Also, I would also be inclined to add the Posterity Edition / First Print for the recently released Pier Solar & The Great Architects for the Mega Drive, as it differs from the more common Reprint Edition

There are also several PAL Mega Drive games which came blister packed with promotional POGS, so I don't know whether you'd also include these?

Likewise, there are plenty of SNES & Mega Drive double packs, such as those from Codemasters, which were two standard retail games bundled together in a cardboard slipcase