Here is an extremely rare one: the first release of Gelfling Adventure. This is an interesting game because it is essentially the same as the Hi-Res Adventure #6 (The Dark Crystal) only developed specifically for young children. Instead of having to type commands such as >GO NORTH, the player simply selected an action from a list of three options. This is probably one of the rarest of all the Sierra titles. It was released with virtually no marketing/advertising and sold very poorly. I am not sure how many copies of this exist today. Any info would be appreciated.