Editing Adventure Game Interpreter (section)

{{Short description|Game engine developed by Sierra On-Line}}
{{More citations needed|date=September 2014}}
{{Use American English|date=November 2022}}
{{Use mdy dates|date=November 2022}}
{{Infobox software
| title                  = Adventure Game Interpreter
| name                   = Adventure Game Interpreter
| logo                   = <!-- [[File: ]] -->
| screenshot             = <!-- [[File: ]] -->
| caption                = 
| author                 = Unknown
| developer              = [[Sierra Entertainment|Sierra On-Line]]
| released               = {{start date and age|1984|05|p=y}}
| discontinued           = 1989
| latest release version = 3.002.149
| latest release date    = {{start date and age|1989|08|17|p=y}}
| programming language   = 
| operating system       = [[MS-DOS]], [[Apple GS/OS]], [[Apple ProDOS|ProDOS]], [[Classic Mac OS#System 1, 2, 3 and 4|Macintosh System]], [[Atari TOS]], [[AmigaOS]]
| platform               = [[Intel 8088]], [[x86]], [[Apple II]], [[Apple IIGS]], [[Mac (computer)|Mac]], [[Amiga]], [[Atari ST]], [[TRS-80 Color Computer]]
| size                   = 
| language               = [[English language|English]]
| genre                  = [[Game engine]]
| license                = [[Proprietary software]]
}}

The '''Adventure Game Interpreter''' ('''AGI''') is a [[game engine]] developed by [[Sierra Entertainment|Sierra On-Line]]. The company originally developed the engine for ''[[King's Quest]]'' (1984), an [[adventure game]] that Sierra and [[IBM]] wished to market in order to attract consumers to IBM's lower-cost [[home computer]], the [[IBM PCjr]].<ref>{{cite web | title=King’s Quest: World Video Game Hall of Fame | url=https://www.museumofplay.org/games/kings-quest/ | website=The Strong Museum of Play | publisher=The Strong Museum of Play | access-date=4 May 2025}}</ref>

AGI was capable of running animated, color adventure games with music and sound effects. The player controls the game with a [[Computer keyboard|keyboard]] and, optionally, a [[joystick]].

After the launch of ''King's Quest'', Sierra continued to develop and improve the Adventure Game Interpreter. They employed it in 14 of their games between 1984 and 1989, before replacing it with a more sophisticated engine, the [[Sierra Creative Interpreter]].