Nice one, but hardly best of the series.
No, this game didn't add much more than The Loop to the series I'm afraid.
Artwork is better than ever, the sfx is great and navigation is very fast and smooth.
However, this game was fairly short and not challenging at all. In fact the largest problem I had was finding out that I had to leave my things before moving past the red light in the very beginning of the game. I don't miss the eternal search for pixel-small items onscreen, but I do miss puzzles that needed actual solving to be solved and I believe that all puzzles in The Edge can be solved simply by random clicking. Most puzzles just need a single button pressed or as was the case of deactivating the electric fence pressing three buttons once and it's done.
Also, the ending sucked. But it was still entertaining while it lasted so I'll be kind and give this one a 7 for the beautiful egyptian artwork, but if this hadn't had the Submachine title I might not had been so kind.