The menu of Circus Match 3 is fronted by a lady in a circus costume, and what follows is a match-3 game with a twist. Some of the tiles on the board have a colored background, and your real task is to remove every one of those backgrounds.
Focus on the tiles that are still colored instead of simply making the biggest match. The Help button from the main menu explains the details, and High Scores keeps your best results. Related on this site: Match 3 Jewels and Bejeweled 4.