When playing via Wi-Fi, you can play head-to-head against a friend with another PSP. You can play a quick game, a pickup game, or one of a few available minigames (dance contest not included). The Wi-Fi play seemed to work quite well, though we did note a bit of slowdown in this mode that wasn't there in other portions of the game. The party mode is a way for up to four players to get together to play some of the minigames on one PSP. It's just your basic "pass-and-play" kind of thing, and if, for some reason, you're really desperate to play the dance contest against other people, you can do so here.
All told, NFL Street 2 Unleashed is certainly not light on content, most of which is pretty enjoyable. However, there's one prevailing issue with every mode that does serve to bring down the overall experience some: namely, the load times. In between each and every game or minigame you play, you'll have to wait anywhere from 20 to 30 seconds for it to load up. If you're just playing a quick game, this might not be as much of a problem for you. But if you're trying to play through something like the NFL challenge mode, which requires you to play a lot of brief challenges that don't take more than a couple of minutes to complete, these heinous load times can really break up the pacing, therefore becoming downright frustrating over time. The loading doesn't totally wreck these modes, of course, but it's definitely a hindrance.
Graphically, Unleashed looks nearly as good as its PS2 counterpart, which actually is really saying something. Apart from a few blurrier textures and less-detailed faces, the in-game visuals actually look pretty great, as a whole. Everything is bright, crisp, and colorful, and apart from the ad hoc mode, Unleashed seems to run at quite a consistent frame rate. The one area that suffered a bit in translation is the audio, of which there is significantly less when compared to the console version...though in some ways, that's a blessing in disguise. All the sound effects and soundtrack songs from the console games made their ways into the PSP version, but none of the voice work did. While the soundtrack is still pretty weak, the lack of generally annoying player chatter is hardly anything to weep over, because it was easily one of the least appealing aspects of the console games.
NFL Street 2 Unleashed may be one of the least altered, if not the least altered, of all the console games ported to the PSP. And that ultimately works both for and against it. Graphically, it's tough to argue with a game that looks just about as good as its PS2 counterpart, and it's great that the same long list of play modes made it into this version. However, if you've played NFL Street 2 already on consoles, there's not a lot of reason to rush out and buy this one, because none of the new content is really all that enthralling. Ultimately, Unleashed is best served to those diehard NFL Street fans who absolutely want to play football on the go, as well as to those who didn't experience the original NFL Street 2 on consoles. If you fall into either of these categories, the game is certainly worth a look.