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Revision as of 12:33, 21 February 2009 by Timofonic (talk | contribs) (Oops, fixed link name to the SCI Roadmap)
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Engine developer FreeSCI team, jvprat
Companies that used it Sierra
Games that use it Sierra SCI Games, SCI Fan Games
Date added to ScummVM 2009-02-14
First release containing it None


SCI, which Sierra referred to as both the "SCript Interpreter" and the "Sierra's Creative Interpreter", is a p-machine style virtual machine for executing platform-independant, object-oriented code.

SCI was designed for 16 bit little endian computers, although there were later attempts to create 32 bit versions, LSCI, and SCI32. SCI was exclusively used by Sierra On-Line, Inc., to run its computer game series, with titles like Leisure Suit Larry 2-7, Space Quest 3-6, King's Quest 4-6, Quest for Glory 1-4, and several others.

The SCI engine in ScummVM is based on the code of the FreeSCI project, used with permission.


SCI was initially created in 1988 by Jeff Stephenson for replacing AGI. The first software using it was the King's Quest IV game at the same year of it's creation, which was previously released under the AGI engine.


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