An .XOF file is a shared extension used in separate domains—one being an older DirectX-related 3D format holding geometry, normals, UV coordinates, materials, and texture names, sometimes flagged by "xof … txt …" or "xof … bin …," and the other being OthBase’s XML game record format for Othello, which stores moves and metadata; opening the file to check for XML versus a DirectX-style header or binary is the simplest way to know which is which.
When people say "XOF is a 3D graphics file," they mean it includes the content necessary to describe 3D shapes—like meshes, normals, UVs, materials, and sometimes frames or animation—from the older DirectX-era format, which may appear in ASCII with clear keywords or in binary, and because of aging toolchains, a common approach is to import/convert it to FBX/OBJ/GLTF, with the fastest verification being a text-editor check for an "xof …" header or model-related structures.
To quickly tell what kind of .XOF file you have, look at its source and what shows up when opened as text: files tied to 3D packs, mods, or DirectX workflows tend to be the 3D/XOF variety, whereas files from Othello tools or OthBase tend to be XML; readable XML starting with `<?xml ...?>` confirms the OthBase type, while headers beginning with `xof` or 3D terms like Mesh, Frame, or TextureFilename—or messy binary with "xof" visible—point to the 3D format, and these fast checks typically identify it without extra tools.
When we say "XOF is a 3D graphics file," we’re saying it holds the data needed to render a model instead of a single bitmap image, and in past Windows/DirectX workflows it acted like an X-file container that kept mesh geometry, lighting normals, UV texture coordinates, and material definitions such as color, glossiness, transparency, and texture references.

If you liked this post and you would such as to receive even more information relating to
XOF file online viewer kindly check out our web site. Depending on how it was generated, it might also store node
structures that define part relationships and sometimes animation data, and it can be written as plain text—readable with visible keywords—or as binary, which appears scrambled even though it encodes the same underlying 3D content.