Although the new GameBreaker system is an extension of the mechanic that was in place in the previous games, there's one addition that, shockingly, hasn't been featured in any of the previous NBA Street games. One would think that a Dunk Contest would be a natural fit for a game that offers so much above-the-rim play, but this is the first time you've been able to dunk outside of the context of an actual game.

The Dunk Contest is very similar to the GameBreakers, in that you can use the right analog stick (and the turbo buttons) to pull off a huge variety of high-flying, impossibly acrobatic moves. All you need to do is run toward the hoop, hit the shoot button, and start flicking the stick this way and that, all in an effort to impress the randomly chosen celebrity judges. Again, if you try too hard, there's a good chance that you'll end up with nothing more than a bruised ego.
Unlike the GameBreakers, however, you've got a few other ways to show off for the judges. If you want, you can choose from several props (including a dumpster and a Porta-Pottie), then leap over them while performing your aerial wizardry. Taking a page from the excellent Dunk Contest found in this year's edition of NBA Live, you can also toss the ball to yourself in a variety of ways, such as kicking the ball off the backboard before gathering it for the throwdown.
It would have been really easy for the developers, realizing that they had a hugely successful formula on their hands, to simply toss a few new moves and players into NBA Street V3, safe in the knowledge that most fans would rush out to buy the new game as soon as it hit store shelves. Thankfully, as was the case with the last game, they wanted to create a brand new experience, and they've definitely succeeded with the additions of the new GameBreaker system and the Dunk Contest. Life above the rim has never been better.