For $5, you get a great-looking game as finely-tuned as any of Cave's other arcade-style games, making it more than the sum of its parts. Anyone into platforming action should give Nin2-Jump a go.
Nin2-Jump is a bit of an anomaly: while it may initially appeal to Cave fans, and it is fun while it lasts, the game isn't deep enough to whet said fan's appetites.
Nin2-Jump is an interesting experiment, with gorgeous graphics and a cool main character. Too bad that its level design and some weird choices from the devs made the entire experience a little nightmarish.