Osumania

Osu!mania is a rhythm game mode within the free-to-play rhythm game Osu!. It is heavily inspired by the game Beatmania, featuring a vertical scrolling playfield with multiple columns. Players interact with falling notes, called "hit objects," by pressing corresponding keys on their keyboard in time with the music. The goal is to achieve a high score by accurately hitting these notes as they reach a judgment line at the bottom of the screen.

Unlike the standard Osu! mode which uses a mouse and keyboard, Osu!mania is played exclusively with a keyboard. The number of columns used can vary, with common configurations including 4K (four columns) and 7K (seven columns). Each column corresponds to a specific key or combination of keys that the player must press. The complexity of the charts, or beatmaps, increases with the number of columns and the density of hit objects.

Osu!mania features a wide variety of music genres and difficulty levels. Players can download community-created beatmaps, which are essentially custom levels designed for specific songs. The game tracks player performance based on accuracy, timing, and combo streaks. Successful hits contribute to a score multiplier, while missed notes break the combo and reduce the score. Osu!mania has a dedicated community that creates and shares beatmaps, competes on leaderboards, and develops custom skins to personalize the gameplay experience.