.D$$ File Extension
AGT Game Encrypted Message File
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What is a D$$ file?
Game file used by AGiliTY, an Adventure Game Toolkit (AGT) interpreter; contains encrypted messages referenced by AGT games during gameplay.
An AGT game consists of typing commands to navigate through a story, similar to a choose-your-own-adventure book. Interpreters, like AGiliTy, emulate older machines from the 1980s and 1990s in order to play AGT games.
AGT games can be packaged with a wide variety of files that contain game data, including .TTL, .INS, and .VOC. Because of the large number of files that accompany the AGT game, the files can be converted into a single .AGX file with the AGT2AGX utility that comes with AGiliTy. This conversion reduces game size over 100K, decreases load time, and reduces clutter.
Common D$$ Filenames
[name of the game].d$$ - The D$$ file bears the same name of the game.