Mario Kart Wii effects data
File type: Game file
A bfsar file extension identifies an effects-data archive used by Mario Kart Wii. A bfsar file stores effects data for the game.
File type category:
Game file
Date updated: October 30, 2026
The bfsar file extension is associated with Mario Kart Wii, Nintendo's racing game for the Wii video game console.
A bfsar file is a proprietary game-resource archive containing effects data. The game uses this data as part of its internal files, so it is not normally opened as a standalone document.
Mario Kart Wii uses bfsar files internally on the Wii, so the game itself is the normal way to use them. Standard archive and media applications generally do not open this format.
For inspection or modification, specialized Mario Kart Wii modding tools may support BFSAR files. Opening the file may require extracting it from the game's data first.
A bfsar file is not normally converted to a common document, archive, or media format because it is a proprietary Mario Kart Wii resource archive. Modding tools may extract or repack its contents, but the original BFSAR format should be retained for use by the game.
Software applications that handle other tasks involving bfsar files:
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