File referenced by AGiliTy, an Adventure Game Toolkit (AGT) interpreter; contains encrypted game data about rooms featured in the game; includes descriptions of rooms and help messages; referenced by the AGT game as the player navigates through the story.

In order to navigate through Interactive fiction games, like AGT games, you must type commands in the game. The story will change depending on what decisions you type. AGT games are often packaged with many files. Each file contains game data, including .VOC, .TTL, and .INS files. 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 clutter, load time, and game size. NOTE: DA2 files are similar to .DA1, .DA3, and .DA4 files. These files contain game data referenced for different aspects of the game.

Data file saved by DeepAnalysis, a program used to research eBay auctions; contains auction results, buyer and seller information, and other market data; used for saving sales research data and generating reports in the software.

DeepAnalysis is now called as HammerTap.