Click the Play button to begin the game, then simply click on a fruit with your mouse, and drag your mouse cursor to the nearest fruit of the same type. Connections cannot be made to fruits that are further than one tile away, but you can make both diagonal and horizontal connections. Keep doing this until you form a chain of three or more of the same fruits. If you make a chain of five fruits or longer, you'll get additional bonus points!
Be quick though - each level has a timer, and you have to score a certain number of points before you can make it through to the next level.