SCI is the Sierra Creative Interpreter, a game engine created by Sierra On-line in the late 1980s. It was the second game engine used by Sierra for graphical adventure games, the first being AGI (Adventure Game Interpreter).
SCI Studio is a completely free game development system for Sierra's SCI game engine. It allows you to create games like Sierra's King's Quest, Space Quest, Police Quest, Leisure Suit Larry and Quest for Glory.
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