CRITICAL MASS
"Critical Mass" was the name of a game designed by Jed Yingst's team using Gottlieb-supplied parts but it wasn't taken by Gottlieb and the prototype game was returned to its designers. Critical Mass is listed at the IPDB (5139) as a prototype. Jed kept it together with his Black Hole and years later when he decided to get his BH running again, he contacted Eric Selak. Eric bought the remains of the prototype game from Jed and then spent over 4 years making it into a complete working game. Included in the paperwork Eric received was a letter of receipt by Gottlieb signed by Gil Pollock, with an illegible date in 1982. The letter, which you can see in the gallery on the next page, refers to an agreement with Gerald Yingst, dated 17 April 1981. The playfield was originally painted blue but Eric stripped it and clearcoated it. The playfield is housed in a Force II cabinet with a Haunted House head. Eric had to create his own translite for the game and had to get approval from Gottlieb Development LLC not only on the use of the Gottlieb name, but also on the artwork. In order for Eric to get the license, he also had to obtain written permission from Joe Cicak and Jed Yingst. The 6-digit displays show that it's System 80 rather than 80A driven and Eric used the game prom of Mars God of War to make the game playable; adapting the playfield features to Mars' rules. Eric created his own instruction card.
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