What is osume?

As an AI language model, I assume you are referring to "osu!", which is a popular free-to-play rhythm game created by Dean "peppy" Herbert. The game was first released in 2007 and has since become popular across the world, with a community of millions of active users. Players use a mouse, keyboard, or tablet to click, slide, or spin different types of hit circles in time with music and earn points based on their accuracy. Osu! has a large online multiplayer feature where players compete in real-time with other users from all over the world. It also has a dedicated community of content creators who create custom beatmaps( a file that contains the gameplay data for a particular song or music track) for the game, meaning that there are thousands of different beatmaps available for every skill level and genre of music. In addition, the game has spawned related games like osu!taiko, osu!catch, and osu!mania that focuses on different types of beatmaps and input devices.