Baby's Day Out (partially lost builds of cancelled movie tie-in video games; 1994)

Title screen from the Game Boy version.

Status: Partially Found

Date found: Unknown (Prototype and ROM Dump of SEGA Genesis port)
October 19, 2014 (Game Boy)

Found by: Unknown (Sega Genesis)
Purple Shyguy (Game Boy)

Advertisement from the original VHS release of the movie, following the end credits.

Based on the 1994 movie of the same name, Baby's Day Out is a cancelled video game developed by Designer Software and published by Hi Tech Entertainment that was scheduled for release in October 1994. It was fully completed and ready to be released on the Super Nintendo Entertainment System, Sega Genesis and Game Boy, but was cancelled at the last minute for unknown reasons. Instead of Bink, the player controls what appears to be Bink's guardian angel that helped Bink to stay away from the kidnappers, which never appeared in the film. In November 2014, a copy of the Game Boy port was sold on eBay.

Only prototypes of the Genesis and Game Boy versions have been found, but unlike the Game Boy version, two Genesis prototypes have appeared online and are available for download on several ROM sites. No known prototypes or final builds of the SNES version have resurfaced.

References

http://nintendoage.com/forum/messageview.cfm?catid=35&threadid=136787 The forum thread where the Game Boy port was found. (NOTE: you need an account to see screenshots of the port.)