Set in a sushi bar, you take the role of a sushi chef whose goal is to feed your hungry customers. To do that, you line up matches of three or more sushi horizontally or vertically. In Hungry Guest mode, you must keep serving those matches, or your guests will leave. In Happy Guest mode, you can serve all day long.
Each match makes money. The larger the match, the more the money. Later levels gives you special types of sushi to match, giving you extra money or powerups. After certain levels, you unlock real sushi etiquette tips. You also unlock awards for certain actions, such as the longest chain of matches, or the highest monetary tip. Beyond looking at these tips and awards, though, they contribute nothing to the game.