I feel I should apologise for this post 'coz I should know the answer but I've got myself into one of those positions where I can make a case for both sides of the argument.
I have Barbie's Ocean Discovery game on a Windows CD ROM, I'm looking after it for a friend. The description in the documentation sounds identical to the description of the Game Boy game that's already on file. The game itself, as far as I've played it, seems to play the same way and the minigames seem to be the same too. The menus are different and Barbie and the other characters speak so there's no text at the bottom of the screen as there is in the Game Boy version but then I'd expect that kind of difference between these platforms.
However there are some minor differences in gameplay which have me wondering whether I should submit a new game or a new platform for the existing entry. For example there's no password supplied when a piece of the map is found as is shown here: http://www.mobygames.com/game/gameboy-color/barbies-ocean-discovery/screenshots/gameShotId,268869/
It's also possible to take snapshots of Barbie as she swims around which is a feature I cannot find in the description of the Game Boy version here or elsewhere.
Normally I'd expect that different content would mean a different game entry but we do already have a Windows and a Game Boy version together under the same title with Barbie's Pet Rescue. So do these minor differences make the Windows version a different game or are they just platform specific variations?
From the way your describing it, my opinion would be to add it as an additional platform to the game entry already on file, along with you also editing the description to highlight the minor differences you know about.
Thanks both. It will be done