

The original osu!standard mode remains the most popular to date and as of 2021, the game has over 15,200,000 registered users. There are four official game modes: "osu!" (unofficially called osu!standard, abbreviated as osu!std), "osu!taiko", "osu!catch" (unofficially called "osu!ctb", or "catch the beat"), and "osu!mania". Each mode offers a variety of beatmaps, playable songs ranging from "TV sized" anime openings to "marathons" surpassing 7 minutes. In osu!standard, beatmaps consist of three items – hit circles, sliders, and spinners. These items are collectively known as "hit objects" or "Circles", and are arranged in different positions on the screen at different points of time during a song. Taiko beatmaps have drumbeats and spinners. Catch beatmaps have fruits and spinners, which are arranged in a horizontally falling manner.

Mania beatmaps consist of keys (depicted as a small bar) and holds. The beatmap is then played with accompanying music, simulating a sense of rhythm as the player interacts with the objects to the beat of the music. Each beatmap is accompanied by music and a background. The game can be played using various peripherals: the most common setup is a graphics tablet or computer mouse to control cursor movement, paired with a keyboard or a mini-keyboard with only two keys.

The game offers a buyable service called osu!supporter, which grants many extra features to the user. Players are able to download beatmaps directly from inside the game, without the lengthy process of using browsers through a service called osu!direct. A heart icon beside the username on the official osu! website, additional pending beatmap slots, faster download speeds, access to multiplayer on cutting edge builds, friend and country-specific leaderboards, one free username change, more in-game customization, a yellow username in the in-game chat, and more customization on one's user page (the "me" tab).

osu!supporter is not a recurring service.Ĭommunity and competitive play Community events Īn audience watches players idke and RyuK compete at the osu! TwitchCon Booth in 2018 osu!supporter does not affect the ranking system, or provide any in-game advantage. Osu! also features different events, such as fanart and beatmapping contests. Unofficial events and conventions are also being held.
