ATB (File Format)

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ATB (Aqualead TaBle) is a table-based file format developed by Aqualead and found in some Wii and 3DS games (and suspected to be used in GameCube titles as well), such as One Piece: Unlimited Cruise Episode 1 - The Treasure Beneath The Waves, One Piece: Unlimited Cruise Episode 2: Awakening of a Hero, One Piece: Unlimited Cruise SP and One Piece: Unlimited Cruise SP 2.

File Format

The file byte can be either big endian (Wii) or little endian (3DS).

Header

The file starts with the following header:

Offset Type Description
0x00 Char[4] File magic. Always ALTB in ASCII.
0x04 Byte Version number.
0x05 Byte Unknown. 0x80 on Wii, 0x00 on 3DS.
0x06 UInt16 Number of cell entries.
0x08 UInt16 ALRD offset. 0 if not present.
0x0A UInt16 Cell data offset.
0x0C UInt16 Cell entry size.
0x0E UInt16 Padding.

ALRD

In some files there is a section after the header that contains records.

Offset Type Description
0x00 Char[4] Section magic. Always ALRD in ASCII.
0x04 Byte Version number. Always the same as the file.
0x05 Byte Unknown. 0x80 on Wii, 0x00 on 3DS.
0x06 UInt16 Number of record entries.
0x08 UInt16 Number of cell entries. Always the same value as the file's header.
0x0A UInt16 Padding.

Record Entry

TBD

Cell Entry

When there's no ALRD section, the structure of the cell data is not defined in the file itself. It may contain various types of values, including strings and integers.

Version List

Version Found in
1.0

Tools

The following tools can handle ATB files:

  • (none)