In the absence of new weapons, Ratchet & Clank: Quest for Booty
does bring one new upgrade for Ratchet's trusty wrench - the Kinetic Tether. Most of the game's puzzle elements make use of the Tether's ability to grapple on to objects and move them around. Most of the time, you're grabbing platforms and moving them around, though once or twice you use it to manipulate objects in what is essentially a giant jigsaw puzzle.
The Tether is context-based, though the detection is off. It wasn't uncommon to find myself in a situation where I needed to use the Tether, but didn't know I had to because the little purple icon wouldn't show up. It is even more frustrating when the icon shows up, but the game insists on throwing an un-ending supply of ghost pirates.
I've loved every single Ratchet & Clank release so far, but with Ratchet & Clank: Quest for Booty, I couldn't help but be a little let down. It's not that I hated it since even with its flaws, Quest for Booty is easily better than most retail games; at the same time, it is hard to shake the feeling that something is missing. In the end, its a fun pick-up if you're looking for a quick play, but nothing you'll keep playing after you beat it.