Map file

Map files, .map files or map cache files, are a file type employed within the Blam engine used by all first-person shooter Halo games. As their name suggests, they are the files which store data for campaign levels and maps for multiplayer, Firefight and Spartan Ops. Due to the uncertainty of game development, map names change frequently during production and may not be finalised until relatively close to release. As such, a map's display name in the in-game user interface is often completely different to the actual .map filename inside the game directory. This information is primarily used in modding.

This page intends to serve as a general overview of the .map file type; for in-depth technical information, see this page on the c20 Reclaimers Halo modding wiki.

Halo 3
Released Halo 3 .map files can be found in the,  , and   folders.

Halo 3: ODST
All Halo 3: ODST campaign .map files are in the  folder.

Halo: Reach
All Halo: Reach .map files are in the  folder.