What is a .OSB file?
An OSB file is a special type of file used in the game osu!, which is a game where players follow the rhythm of music and tap on visual cues. This file is known as an OpenStreetMap Binary Map File, but in the context of osu!, it's used to create storyboards. A storyboard in osu! is like a background animation or image that plays while you are playing a game level, which is called a Beatmap in osu!.
The OSB file keeps information about an image, which is usually in the format of a .JPG or .PNG file. This image is shown in the background while you play a Beatmap. The OSB file tells the game when and how to show this image based on how well the player is doing in the game. For example, the image might change or move in certain ways if you hit notes perfectly or miss them.
To open an OSB file, you need to use the osu! game. This is because the OSB file is designed to work specifically with osu! and its Beatmaps. When you download or create a Beatmap for osu!, it might come with an OSB file. These files are usually kept in the "Beatmaps" folder where osu! is installed on your computer. A common place to find this folder is in the C:\Program Files\osu!\Beatmaps\ directory, but sometimes you might need to make this folder yourself if it's not there.
In summary, an OSB file is used in osu! to make the game more visually interesting by adding background images that change during gameplay. You need the osu! game to open and use these files, and they are kept in the Beatmaps folder of the game's installation directory.
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