CP+B's "Rooftop Racer" advergame for Coke Zero, which ties into the inaugural Coke Zero 400 NASCAR race that took place on July 5th, lets players step into the virtual car of 400 competitor Elliott Sadler and reach the checkered flag.
The one major obstacle, though, is that racers have to balance a Coke Zero bottle that sits on top of their ride. Hold down the arrow keys to power Sadler's car and use them to manuever as well. Under the instructions menu, one can customize game control by determining which way the bottle slides, either in the direction steered or the opposite direction.
The longer players stay in the five-lap race and outbattle fellow drivers while keeping the car powered and the Coke Zero bottle balanced, they increase their score automatically and possibly unearth hidden bonus points along the way. After the race, players can check their ranking on the leaderboard or click on a link to challenge a friend.