osu! is a free-to-win rhythm game developed by peppy with four game modes: osu!standard, a circle clicking simulator, osu!taiko, a drumming emulator, osu!catch, a fruit salad catcher, and osu!mania, a key smashing synthesizer. It is currently freeware originally for Microsoft Windows. Game levels are called beatmaps. In each beatmap, a song will play and different hit elements (hit circles, sliders …