.P2C File Extension
Portal 2 Community Puzzle File
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What is a P2C file?
A P2C file contains a community, or co-operative, puzzle used by Portal 2, a first-person puzzle solving game. It stores the definition of puzzle in a voxel X Y Z (X is right, Y is forward, Z is up) format where each voxel represents a 1 x 1 x 1 panel area in the puzzle. P2C files also contain metadata about the puzzle, which includes the title, description, creation time, and version.
P2C files are saved in plain text and can be opened and edited by a text editor. They can also be opened by the level editor included with Portal 2 and exported to the .VMF Valve Map file format.
P2C files are located in the following directory:
C:\Program Files (x86)\Steam\steamapps\common\portal 2\puzzles\