An immersive sim (simulation) is a video game genre that emphasizes player choice. Its core, defining trait is the use of simulated systems that respond to a variety of player actions which, combined with a comparatively broad array of player abilities, allow the game to support varied and creative solutions to problems, as well as emergent gameplay beyond what has been explicitly designed by the developer. This definition is not to be confused with game systems which allow player choice in a confined sense or systems which allow players to easily escape consequences of their choices.
Warren Spector is one of the key figures that defined the immersive sim genre.
Looking Glass Studios, 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 Intermetrics and was renamed Looking Glass Studios. Following financial issues at Looking Glass, the studio shut down in May 2000.
Looking Glass Studios