BAGST (File Format)

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BAGST (Binary Audio Group SeTting) is a file format used in Wii U and Nintendo Switch games. It stores audio grouping and linking parameters.

File Format

Header

Offset	Type	Description
0x00	Char[4]	File magic. Always AGST in ASCII.
0x04	UInt16	Byte-order-mark. FE FF for big endian, FF FE for little endian.
0x06	UInt16	Version number.
0x08	UInt32	Size of the file in bytes.
0x0C	UInt32	TREE offset.
0x10	UInt32	GRP ‌ offset.
0x14	UInt32	MAND offset.
0x18	UInt32	STRG offset.

Version List

Version	Found in
0.1	Super Mario Maker
0.2	1-2-Switch ARMS Game Builder Garage Mario Kart 8 Deluxe Mario Kart 8 Deluxe (S00018080-R00018076-A00000000 Prototype) Nintendo Labo - Toy-Con 01: Variety Kit Nintendo Labo - Toy-Con 02: Robot Kit Nintendo Labo - Toy-Con 03: Vehicle Kit Nintendo Labo - Toy-Con 04: VR Kit Splatoon 2 The Legend of Zelda: Breath of the Wild (Nintendo Switch)
0.4	Ring Fit Adventure Super Mario Maker 2
0.7	Animal Crossing: New Horizons
0.9	Nintendo Switch Sports Splatoon 3 Super Mario 3D All-Stars The Legend of Zelda: Tears of the Kingdom
0.10	Nintendo Switch Online Playtest Program Super Mario Bros. Wonder

Tools

The following tools can handle BAGST files:

• (none)