Agi Player is an open-source implementation of Sierra's popular AGI adventure game engine used by the first entries in the King's Quest, Space Quest, Leisure Suit Larry series and more.

It is implemented in C#, and uses SDL for graphics, input and sound.

Agi Player is based on Nick Sonneveld's NAGI, which is written in C.

Nick converted the original Sierra AGI implementation from assembly code to C and ported all graphics, input and sound to SDL.

I converted his implementation from C to C# and added some new features.

Why? Because it's fun and it was an opportunity to learn more about the internals of AGI.

• .NET Framework 2.0 or later
• Windows 7 or later, 32-bit or 64-bit

• Supports PC, Atari ST and Amiga AGI v2 & v3 games.
• Themes to emulate the color palettes and fonts used by the various AGI interpreters. This includes themes for CGA, EGA, Hercules, Atari ST, Amiga and AppleIIgs. You can cycle through the themes while the game is running using CTRL+R.
• 1-channel and 4-channel sound support.
• Optionally skip the question at the startup of some Sierra games.
• Support for games that are compressed using the zip file format.
• Automatic game detection of nearly all known versions of the PC, Atari ST and Amiga Sierra games.
• 3 input methods: Classic prompt (no-pause), Input box (pause), and Classic w/ Word List box.

Agi Player looks in the current working directory for an AGI game. This makes it easy to run a game using Agi Player by simply copying it to the game folder.

If no game is found in the directory, then it searches its subdirectories recursively, as well as any .zip files. The games that are found are then listed in a game selection screen.

You can specify an alternate directory by passing it as a command-line argument, in order to launch or discover games in a directory separate from where Agi Player is located.

Agi Player can be configured using the settings.xml file, included with the release.

See the contents of settings.xml for a description of each setting, used to control display, sound, input and logic execution.

Sierra developed several games during the years 1985-1989 using the AGI system. There were 4 major revisions of the system for the PC platform.

• Version 0: Unsupported. Used by the original booter version of King's Quest I.
• Version 1: Unsupported. Used by the original booter version of King's Quest II and The Black Cauldron.
• Version 2: Supported. Donald Duck's Playground, Christmas Card, King's Quest I, II, III, Leisure Suit Larry I, Police Quest I, Space Quest I and II, Mixed-Up Mother Goose.
• Version 3: Supported. The Black Cauldron, King's Quest IV, Gold Rush!, Manhunter I and II.

In addition to the PC versions of AGI v2 and v3 games, most Atari ST and Amiga versions of the games also work.

Official Sierra demos also work. Fan games probably work too, but are untested.

COPYRIGHT AND PERMISSION NOTICE

Copyright (c) 2006-2018 Hugues Valois

Copyright (c) 2000-2002 Nick Sonneveld

All rights reserved.

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