Xenopedia - The Alien vs. Predator Wiki

Sierra Entertainment

3,680pages on
this wiki
Add New Page
Talk0 Share
Sierra Entertainment
Sierra Logo
Headquarters: Fresno, California
Founded by: Ken Williams
Roberta Williams
Years active: 1979-present
Major activities: Video game publisher

Sierra Entertainment, formerly known as On-Line Systems, is an American video game publisher based in Fresno, California. It was founded in 1979 by Ken and Roberta Williams.

Video GamesEdit