Sierra Studios produces titles that offer consumers a captivating interactive gaming experience, with engaging characters and groundbreaking graphics. This Sierra division has strategically aligned itself with some of the computer game industry's leading development houses, in addition to employing the top writing, creative and computer design talent in the industry. Sierra Studios' veteran staff of game developers, including well-established designers such as Roberta Williams and Jane Jensen, brings to the table a broad spectrum of creative approaches to developing game concepts. In addition to Sierra Northwest, based at Sierra Studios' home offices in Bellevue, Washington, the division includes renowned strategy game developer Impressions Games, based in Cambridge, Massachusetts. Sierra Studios is also partnered with key independent developers, including Valve Software, Relic Entertainment, and Troika Games. Sierra Studios' products are distributed by Vivendi Universal Interactive, the largest retail PC software development and distribution company in the world.