.AIN File Extension

.AIN File Extension

File Type 1

Source Engine Compiled AI Nodegraph File

Developer Valve
4.3  |  14 Votes
Category Game Files
Format N/A

What is a AIN file?

Game data file used by games developed with Source, a first-person shooter (FPS) game engine developed by Valve; stores a navigation mesh, which consists of points and connected lines that make up potential traversal paths for artificial intelligence (AI) non-player characters (NPCs), or "bots;" used for real-time navigation and movement for AI computer players.

More Information

The original nodegraph is created using the Level Designer component of the Source engine SDK, which is called the Valve Hammer Editor. Once complete, an AIN file is automatically compiled by the Source engine when the game is loaded. The compiled AIN file is saved to the \maps\graphs\ directory within the game installation directory.

NOTE: The Valve Source engine is used for games such as Half-Life 2 and Team Fortress 2.

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Programs that open or reference AIN files

Updated March 11, 2011
File Type 2

AIN Compressed File Archive

Developer N/A
3.0  |  6 Votes
Category Compressed Files
Format N/A

What is a AIN file?

File or group of file compressed with AIN compression software; AIN was a shareware archiving program available for MS-DOS in the 1990s.

Programs that open AIN files

Multiple Unpacker (MUP)
Updated March 3, 2007

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