.OSU File

File extension osu is associated with the osu! free music rhythm video game for Microsoft Windows and Mac based on commercial title called Osu! Tatakae! Ouendan.

A typical . osu file contains saved dialog data, used for internal purposes of osu! game.

Files with osu extension are dialog data files from a free music rhythm computer game called osu!.

How to open:

Use osu! to work with .osu files.

How to convert:

Probably cannot be converted to other formats.