What is the OPA file format?
A file with the .OPA extension is a file known as Fly! RAW Image Opacity Map. It belongs to the Game Files category. This format is associated with Terminal Reality.
The reliable way to open a .OPA 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 .OPA 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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