Sperry co-founded Westwood Studios with Louis Castle in 1985, when both were in their early 20s. Before starting Westwood Studios, Sperry worked at Applied Computer Technology in Las Vegas with Peter Filiberti doing game conversions for Activision, Imagic and others. One of his major works was the port of Impossible Mission to the Apple II.
Sperry has been credited with the roles of design, production, support and box and content. In addition to his work at Westwood, he has been credited on games developed/produced by the following companies: Intelligent Games, Ltd., Walt Disney Feature Animation and Looking Glass Studios.
In 1996, GameSpot named him as the third most influential person in the PC gaming of the year, as well as sixth of all time. In 1997, Computer Gaming World ranked him as number six on the list of the most influential people of all time in computer gaming for game design.
- Steinhauer, Adam (September 19, 1996). "Fun and Games: Company capitalizes on creativity with computer animation", Las Vegas Review-Journal, p. D1.
- "The Most Influential People in Computer Gaming of 1996". GameSpot.com. Archived from the original on 2010-04-10.
- "The Most Influential People in Computer Gaming of All Time". GameSpot.com. Archived from the original on 2005-02-21.
- CGW 159: The Most Influential People in Computer Gaming
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