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Game Engine: Adventure Game Interpreter (AGI)Group DescriptionThe Adventure Game Interpreter (AGI) engine was first introduced by Sierra for its early early adventure games, pioneered by King's Quest (1984). The game engine was designed by Arthur Abraham and was previously meant for IBM PCjr but was ported to other platforms. Manhunter 2: San Francisco (1989) was the last commercial game published by Sierra using the AGI engine as the engine could no longer compete with other adventure game engines at that time, and was replaced by the Sierra's Creative Interpreter engine. The AGI engine however, continues to be used to create unofficial (shareware/freeware) AGI games by nostalgic individual programmers and companies. Not to be confused with the Game Engine: Adventure Game Studio (AGS) game group.
| Game Title |  Year | Platform | Publisher | MobyScore |
| Enclosure | 2004 | Windows | Femo Duo Entertainment | 3.67 |
| Fuck Quest 2: Romancing the Bone | 2004 | DOS, Windows | | 0.97 |
| Space Quest 0: Replicated | 2003 | Windows | | 3.56 |
| Voodoo Girl: Queen of the Darned | 2002 | Atari ST, DOS | | 3.40 |
| Space Quest: The Lost Chapter | 2001 | Windows | | 3.42 |
| Cloak of Darkness | 1999 | Browser, Windows | | 3.25 |
| California Gold Rush! | 1998 | DOS, Windows, Windows 3.x | Software Farm, Inc., The | 5.00 |
| Fuck Quest | 1998 | Atari ST, DOS, Windows | | 1.27 |
| Manhunter 2: San Francisco | 1989 | Amiga, Atari ST, DOS, Macintosh | Sierra On-Line, Inc. | 3.35 |
| King's Quest IV: The Perils of Rosella | 1988 | Amiga, Apple II, Apple IIgs, Atari ST, DOS | Sierra On-Line, Inc. | 3.90 |
| Manhunter: New York | 1988 | Amiga, Apple II, Apple IIgs, Atari ST, DOS | Sierra On-Line, Inc. | 3.40 |
| Gold Rush! | 1988 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh | Sierra On-Line, Inc. | 3.22 |
| Police Quest: In Pursuit of the Death Angel | 1987 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh | Sierra On-Line, Inc. | 3.69 |
| Mixed-Up Mother Goose | 1987 | Amiga, Apple II, Apple IIgs, Atari ST, DOS | Sierra On-Line, Inc. | 3.45 |
| Space Quest II: Chapter II - Vohaul's Revenge | 1987 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh | Sierra On-Line, Inc. | 3.65 |
| Leisure Suit Larry in the Land of the Lounge Lizards | 1987 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh, TRS-80 CoCo | Sierra On-Line, Inc. | 3.89 |
| King's Quest III: To Heir is Human | 1986 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, TRS-80 CoCo | Sierra On-Line, Inc. | 3.66 |
| Space Quest: Chapter I - The Sarien Encounter | 1986 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh | Sierra On-Line, Inc. | 3.87 |
| The Black Cauldron | 1986 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, PC Booter | Sierra On-Line, Inc. | 3.51 |
| King's Quest II: Romancing the Throne | 1985 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, PC Booter | Sierra On-Line, Inc. | 3.23 |
| King's Quest | 1984 | Amiga, Apple II, Apple IIgs, Atari ST, DOS, Macintosh, PC Booter, SEGA Master System | IBM | 3.50 |
| Donald Duck's Playground | 1984 | Amiga, Apple II, Atari ST, Commodore 64, PC Booter, TRS-80 CoCo | Sierra On-Line, Inc. | 3.82 | Selected Covers
Selected Screenshots
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