As I was typing this, I did check out the flash version you linked to. I would definitely say my comparison to Lode Runner is accurate. It's an "Xtrem" version of Lode Runner, but the general gameplay is similar enough.
The goal appears to be to collect gold items and the visuals certainly are reminiscent of Lode Runner. Then there's the level editor, which is another close similarity to Lode Runner. The appearrance of a stick figure exploring a platforming world has definite ties to the classic Lode Runner. The play itself is based around puzzles and herding enemies to help solve those puzzles, just like Lode Runner. So, despite what you say, it shares a few key distinctive similarities with that older game. I really don't think anyone who has played Lode Runner on the Apple II would miss the resemblance.
Definitely not anything I'd care to play again, and definitely not anything I'd pay to download. If you like it, more power to ya.
Incidentally, the Wikipedia article on the game says it was inspired by Lode Runner.
Edit: And the official homepage of N says "N is an award winning 2d action/puzzle platformer reminiscent of Lode Runner." So, I guess the creators of the game thought it played a bit like it too.