There is only one file type that uses the .TR3 extension:
TomeRaider eBook File
Digital book that can be opened with the TomeRaider ebook reader; saved in a format that allows fast searching, indexing, and text compression; supports Wikipedia and IMDB ebooks.
TomeRaider is available for Windows and multiple portable devices.
|TomeRaider 3||Free Trial|
Updated: May 1, 2008