Brett Hull NHL Hockey was developed in 1994 by Accolade Inc. and Ringler Studios. There was going to be a version for both the cartridge and Jaguar CD add-on although they were never released in the Jaguar’s lifetime. To avoid licensing issues the name of the proto has been changed and released as “Jaguar Hockey”. This game became legendary to have the longest loading times out of all the other Jaguar CD games.
As we can read from the description of the video in viMasterJag’s Youtube Channel:
Brett Hull NHL Hockey is another unfinished game for the Atari Jaguar. We’ve been lucky to have it released in cartridge form, though, by B&C Computervisions.
Differences from this to the cartridge version include, but are not limited to, bug-fixes as well as full-motion-video cut-scenes.
Thanks to Adam for the contribution!