I recently acquired a unreleased game for the original Game Boy under the name of "Death Track". Death Track was a racing shooter DOS game published by Activision so it didn't surprise me that they would try to port it the Game Boy as well. However, when I dumped the ROM, the name of the ROM was called "Trail Blazers". A quick search came up with this link... https://www.unseen64.net/2011/12/10/trail-blazer-gb-cancelled/ A image of this game can been seen in Joypad magazine issue #8 but their isn't any additional information. Later in the Unseen64 article, their is a link to the original programmer's website (http://www.stevendunn.com/) where he describes his specific duties on this game (and other's he worked on). The port was done by Argonaut Software in 1991 (and slated for release 1992 but was cancelled). Although the credits mention music and sfx by Neil Baldwin, the game has no sounds or music (that I can determine). Here are a few photos for anyone who has interest to see. If anyone has additional info they could provide or wants more details about the game, feel free to post here!