Chip's Challenge (Windows)

Chip's Challenge
Developer: Microsoft Publisher: Microsoft Platform: Windows Released internationally: September 14, 1992 This game has unused objects.

To do: Revision differences. Some copies of the game have a wall removed on Level 88.

Chip is willing to do anything for Melinda the Mental Marvel – more than anything, actually, because he wants to join Melinda's exclusive computer club the "Bit Busters". Melinda offers him membership, but on one condition: Chip must find his way from one end of Melinda's magical clubhouse to the other, picking up cosmic computer chips along the way.

Unused Tiles

Despite being a pretty used-content game, this does have unused tiles.

Not Used

Tile indexes 54, 55, and 56 remain unused in the Windows version of Chip's Challenge. They appear to be copies of the used "invisible wall" tile (index 5).

(Source: Chip's Challenge Wiki: Not Used Tiles)