Games made with the Sierra's Creative Interpreter engine (SCI)

Quest for Glory II: Trial by Fire is the second installment in Sierra On-Line's Quest for Glory series, blending classic adventure gameplay with RPG elements in a world inspired by...

Quest for Glory III: Wages of War is an adventure/role-playing game developed and published by Sierra On-Line in 1992. The player takes on the role of the Hero, who has journe...

Quest for Glory IV: Shadows of Darkness is an adventure role-playing game (RPG) developed and published by Sierra On-Line. It was released in 1993 as the fourth installment in the ...

By the time Space Quest 3: The Pirates of Pestulon arrived in 1989, Roger Wilco had become something of a professional survivor. This time he starts the game stranded in a garbage ...

Space Quest 4: Roger Wilco and the Time Rippers takes the series into the wonderfully chaotic territory of time travel. Released in 1991, it gleefully tosses Roger across multiple ...

In Space Quest 5: The Next Mutation, Roger Wilco finally receives something resembling a promotion. Released in 1993, the game puts him in charge of a spaceship and a crew, which f...

Space Quest 6: Roger Wilco in The Spinal Frontier is the most ambitious—and arguably strangest—entry in the series. Released in 1995, it blends traditional adventure ga...

The Colonel's Bequest is a graphic adventure game developed and published by Sierra On-Line. It was released in 1989 for various platforms, including MS-DOS, Amiga, and Atari ST. T...