Much like every other racing game, you must start at the lowest tier and work your way up. At the beginning of the game, you choose a car in the C-tier and start doing races. Races consist of choosing how many power-ups you want to take with you, grabbing three opponents from among your friends list, and clicking start. That's all. Once you hit that start button, the four cars (represented by your tags) will drift, draft, and evade around the track for one lap. Power-ups are automatic, and you can pick up more power-ups on the track as well. There's a few irritations with the formula that hamper it from being a relaly addicting game. The first is that you do not do anything with the power-ups. It would've been nice if you could've at least controlled when powerups were to be deployed, as opposed to simply clicking start and waiting out the race. The feedback on how you do is also small and unintuitive. Finally, there's a lack of car upgrades, which means that money just sits around until you buy a new car.
Despite the hands-off approach EA took with the Need For Speed Nitro social game, it still manages to be a fun game. It's only intended to be used as a marketing tool, and doesn't have the longevity or complexity to survive for more than a few months, but it's surprisingly fun given the intent and subject matter.
[via Inside Social Games]