If you are a fan of platformer games, and you own a PSP, you deserve to have this game in your collection. N+ is a pure side-scrolling platformer, pure and simple. Your goal is to finish the level as fast as possible, while collecting floating squares that give you a time boost. The more time on the clock, the more you can boast about it on the online rankings. Oh, and you can make your own levels, as well as download others from the internet. That's pretty much the entirety of the game, and that's all you really need in a simple game like this.
N+ started out as a Flash game called N. Besides the music and graphical updates, the ports remain identical to the original Flash version. For good reason too: there's nothing to change. The formula has always been there, and it serves its purpose very nicely from the get-go. This is what made games like Super Mario Brothers and Sonic so famous. Hell, seeing your character die is fun, too, especially when his body parts start hitting mines and end up on the other side of the stage. And while I haven't played with the level editor yet, for a simple game like this, who can't love a level editor? I'm sure there's already been a level shaped like a dong made by some idiot, but that just means that the editor, like any other level or object editor in any other game, works. Infinite levels...very nice, especially when you can grab levels from other players. There's even multiplayer...which I also couldn't try out, but the the fact that it's there is icing on the cake.
There's not really much you can find fault in the game, mainly because there isn't much there in the first place. The game is priced at a discount $20 too, so unless platforming just isn't your thing, go out and grab it while you can. There's a good reason the game's been getting high marks on other review sites, and I feel the same.
N+ gets 5 out of 5. If you have a PSP, pick the game up, you owe it to yourself. There aren't many good PSP games out there right now, and this is one of them.