Game Revolution writes: "n its original incarnation, N was a deceptively simple little Flash game: move left, move right, and jump! Little nimble ninja characters that were scarcely more than stick-figures. Your choice of black, white, with specks of red and yellow for graphics. Bonus ninja-worthy injuries, as a result of banging your head against the nearest wall at the frustratingly-compelling, addictive gameplay.
The modestly-named N+ is exactly what it sounds like: N, but more of it-not straying far from the original, not futzing too much with the formula, not fixin' what ain't broke. You run your little guys around various straightforward, amusingly-creative or just flat-out crazy labyrinthine levels, via a surprisingly responsive physics engine-it even takes a second to reverse direction when you're running. You collect gold to extend your life-span, pounce on switches to open doors and reach the exit, wall-jump to reach tucked-away rewards or to avoid threats like mines, ninja-seeking missiles, and even the old-reliable, workaday threat of plummeting to your death."