There is only one file type that uses the .OGF extension:
S.T.A.L.K.E.R. Model File
3D model file used by S.T.A.L.K.E.R. first-person shooter games; stores 3D meshes and animation data; used for game models such as characters, weapons, terrain, and environmental objects.
S.T.A.L.K.E.R. uses the X-Ray Engine, which was developed by GSC Game World, the creators of S.T.A.L.K.E.R.
|GSC Game World S.T.A.L.K.E.R.: Call of Pripyat||Paid|
|GSC Game World S.T.A.L.K.E.R.: Clear Sky||Paid|
|GSC Game World S.T.A.L.K.E.R.: Shadow of Chernobyl||Paid|
Updated: August 31, 2010