Osu! is a free rhythm game where you click, drag, and spin circles to the beat of user-uploaded songs. Originally inspired by a Japanese DS game, it's survived since 2007 purely on community uploads—thousands of players chart beatmaps for everything from pop hits to anime openings. You can jump into the built-in editor and chart your own songs or tweak the interface with custom skins. Leaderboards track your accuracy and combo streaks globally. Multiplayer lobbies let you compete in real-time against other players. The game's longevity comes from its players: volunteer moderators, tournament organizers, and mappers keep new content flowing. It's mouse-and-keyboard by default, though some use drawing tablets for precision. If you want a rhythm game with endless free content and don't mind a learning curve, this delivers.
