...AND IT WORKS BEAUTIFULLY. Gaiden's world is complete and connected. That's one of the biggest problems with a lot of other similar action games. They just present a disjointed collection of stages rather than attempting to create an entire world. There really wasn't THAT much backtracking in the game, though, but you did cross over areas many times. It was like an action game with a Metroid or Zelda flavor...
I can't stop praising the game, though, as it remains my favorite title of its type.
Genji sounds as if it is not only short, but features backtracking through old environments. I love backtracking, when handled properly (as visual variety isn't as important as gameplay variety), but it doesn't sound as if Genji does it.