Go for a walk. When you see a sidewalk obstruction, tap it on the board. If you don't get a bingo in one walk, don't fret! Your browser will remember your squares so you can keep going for walks until you get a bingo.

When you get a bingo, you'll have the option to enter your information for a prize drawing.

If you decide to start a new board, the tiles will re-shuffle so your card will look different every time you play.