It's a good game, even if you haven't played any R&C games previously. Definitely one of the nicer additions to the PSN, and it would be very nice if more of the bigger developers would follow suit with episodic content in between major releases.
I never picked up Tools of Destruction (demo was good; have to eventually add it to the collection) and never played any R&C games on the PS2, but I found myself really enjoying this segue episode which ties the events of Tools with the next R&C game due Fall 2009. Two year break between games is fairly long, so this fills in the gap nicely.
Seems to be about 3-4 hrs. depending on how much exploring you do. So very reasonably priced for a full production value chapter (like Half Life 2 episodes) at $15.
Most of the platforming is fairly straight forward. Combat was a bit mixed. I think if you're already very familiar with the R&C game engine, you'd probably fly right though it a lot faster.
Good quality content either way.







