Looking Glass Studios, Inc. (formerly Blue Sky Productions and LookingGlass Technologies, Inc.) was an American video game developer based in Cambridge, Massachusetts. The company was founded by Paul Neurath with Ned Lerner as Blue Sky Productions in 1990, and merged with Lerner's Lerner Research in 1992 to become LookingGlass Technologies. Between 1997 and 1999, the company was part of AverStar, where it was renamed Looking Glass Studios. Following financial issues at Looking Glass, the studio shut down in May 2000. Notable productions by Looking Glass include the Ultima Underworld, System Shock and Thief series.