What is the GCA3 file format?
A file with the .GCA3 extension is a file known as GURPS Character Assistant. This format is associated with Steve Jackson Games.
The reliable way to open a .GCA3 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .GCA3 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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