The Dallas Quest is an adventure programmed by Steve Bjork, James Garon and others, and published by Datasoft for the Tandy Color Computer, Commodore 64 computer in 1984. It is based on the television series Dallas. There was also a version for the Apple IIe and Atari 8-bit home computers as well as the TRS-80 Color Computer.

In the game, you are a famous detective who has been summoned to South Fork for a secret meeting with Sue Ellen. She has called you here to offer you a proposition. Sue Ellen is in possession of a letter from Jock Ewing written to Miss Ellie, describing an extremely rich oil field he had discovered during his stay in South America. When Jock left for his ill-fated trip back to Southfork Ranch, he carried a map of the oilfield with him. But he also took the precaution of leaving a copy of it with an old friend and former fellow wildcatter named "Chugalug" Jones who now runs a trading post in South America in a village called Playa Peligro. Should anything happen to Jock, Chugalug has been instructed to give the map only to the person who possesses a particular ring. This ring was enclosed with the letter written to Miss Ellie; also enclosed was a snapshot of Chugalug.