Croc 2 Prototypes
From the Croc Wiki, the Croc encyclopedia
Under Construction; will fix in time.
Croc 2 Sega Dreamcast Version
The Dreamcast version of Croc 2 was intended for release after the Playstation and PC versions, and was to add minigames, a new village with presumably two more normal levels (as per "forty-two levels to play in total"). It is unknown if a prototype exists, but Jez San mentioned the port was "canned" implying development didn't get very far, if at all. It was officially cancelled in Autumn 2000.
Minigames
The only thing known about the minigames is that there was more than one to be available.
Cowboy Village
Cowboy Village was probably meant to be the new village in the Dreamcast port. It was meant to be inhabited by the Cowboy Gobbos shown in promotional images.