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Dick Sunderland, looking for more programmers for his new team, alongside Jay Sullivan, interviews Ken. -
Ken quits Informatics to then become an independent consultant and started his own business. This would later become Sierra On-Line -
Ken's brother Larry brought an Apple computer to show Ken -
Ken showed Roberta, his wife, Colossal Cave Adventure. -
Roberta, after finishing Adventure, takes an interest in creating her own adventure games. -
Roberta wanted to have picture to go along Mystery House so Ken decided to reprogram a VersaWriter into creating graphics for her game. -
In May, Ken and Roberta created fliers advertising their game and sent them to computer stores, and put them inside a magazine called MICRO. -
After moving out of Simi Valley, California in the late 1980s, they leased a space on the second floor of a building in Oakhurst that would be their first office for Sierra On-Line that wasn't their house. -
Sierra On-Line is contracted by IBM to create a game for IBM's new PC. IBM would fund the game entirely, from development to marketing. -
King's Quest is the game that was released alongside IBM's PCjr. This game uses the new game engine developed by Sierra On-Line. -
Adventure Game Interpreter is a game engine that was created by Sierra On-Line. It was mainly developed for King's Quest but was used for other games as well. The game engine made it easy to add images to a game. -
Scott Murphy and Mark Crowe pitch Space Quest to Ken who then gives the project the green light. -
After having multiple successes with King's Quest and Space Quest and their many sequels, Sierra decides to go public under the tag "SIER". -
After negotiating with Valve for the rights to publish Half Life in 1996, Half Life is finally released to a resounding success. -
After being in retirement for 25 years, the 2 founders of Sierra On-Line come back to create a VR version of the game that had originally inspired the duo to create Sierra On-Line