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Adventure Game Interpreter

AGI was written in the early 1980's for Sierra On-Line to create a new revolutionary game for IBM's then new computer system, the PCjr. The game, was King's Quest, written by the now famous in the computer games world' Roberta Williams.

Utilising all 16 colours of the EGA graphics adapter, the AGI system allowed players to play an interactive adventure game with text, graphics, and 3-voice sound and music. Since Kings Quest there have been many more games created by Sierra - Space Quest, Police Quest and Leisure Suit Larry to name a few.

In late 1997, the system was nothing but a nostalgic memory of older computer gamers, until it was 'hacked' into by these fans, and 'decoded'. By 1998, a full AGI editor was available. This utility was called AGI Studio, written by Peter Kelly. Now fans were able to create their own adventure games with the ease of this program and use the AGI Interpreter to run them.

Since then, many fan-made games are now available and an SCI editor is also available. SCI was the next generation interpreter after AGI. One of the last AGI games that was created before SCI became the standard was King's Quest 4.

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