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Gbx (GBX) is a proprietary file format used to store data in Nadeo games on a file system.
Gbx is commonly stored as a binary format, but text format variants also exist in older game versions (game config in TrackMania Nations ESWC for example).
Contents[edit]
Gbx files are serialized objects from Nadeo games that include an additional header describing the type of the main object.
Extension[edit]
Gbx files use a double extension format to describe the type of the Gbx, for example, the .Map.Gbx extension is a map file, or the .Replay.Gbx extension is a replay file. There's one exception with the Gbx extension - .Pack.Gbx (used for title packs and other content packs), which refers to the Pak format.
The extension is sometimes written in lowercase like .gbx.