Quake map file
BSP is a map file format used by Quake game engines. BSP files contain layout, object, and resource information for specific level maps. BSP files are used by many Quake video games, such as Half-Life, Quake 2 and Call of Duty.
BSP stands for “Binary Space Partitioning,” which is a technique that breaks up polygons into convex sets. This can be seen in the “lumps” of information found in .BSP files, which allows 3-D maps to be produced more quickly. These “lumps” are designated in the file header. BSP files are not meant to be opened outside of the game or edited, but programs such as ZeroRadiant and Q3Map2 can be used to do so. BSP files are similar to .MAP files, which are also produced by Quake.
Learn more about .BSP files:
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