SierraVision

Encouraged by Mystery House’s popularity, Ken and Roberta went on to produce a number of adventure and action titles under the banners of SierraVenture and SierraVision, and in mid-1982 changed their company’s title to Sierra On-Line – a name that would soon become synonymous with adventure gaming. At the time, their most serious competition came from an East Coast development house who had been making major bounds in the improvement of text-based adventures: Infocom. The limitations of the hardware at the time meant that while Sierra had the innovation of graphics, their games sometimes felt as though they lacked the depth of Infocom’s releases. Still, this was no reflection of Roberta’s creativity – in fact, her ideas and Ken’s programming were stretching the Apple II’s memory and capabilities as far as they could go, and still she was left with an end result that paled next to her initial designs.

- https://allowe.com/games/larry/inside-stories/sierra-history.html