Hi Welcome To Osu!Catch If You Don't Know, What Is Osu, Well Basiclly Osu Is Rhythm And There Is 4 Games Mode Which Is Osu! Osu!catch Osu!Taiko And Osu!mania Also You Have to follow three rules

Rule 1: No Inappropriate Words Or Bad words

Rule 2: No Harassment To other people

Rule 3: No Hater Allowed