It's a good game, but it's missing something that made the others great.
I don't think High Impact Games has done as good a job as Insomniac. The game is incredibly short, the hardest of the lot, and everything is incredibly expensive, from the weapons to the mods to the 10 million bolt RYNO.
The music isn't as good as number 3, but is still quite interesting and effective. It really helps to make the game more realistic.
The graphics are good, but nothing special, really.
The control gets incredibly annoying, but that's really the fault of the PSP, not the actual game. The best pre-RYNO weapon- the Laser Tracer (or Optical Maser Array at V4) becomes useless if your enemy is moving.
Classic R&C gameplay, except for the fact that you are jumping for half the game to avoid enemy fire. Half the enemies are killed in one shot, the other half require about 10 seconds of continuous firing to kill. Typical R&C :)
I think there are too many bosses, and the Giant Clank space segments are incredibly aggravating. I love the addition of Clank challenges, but I am disappointed at the disappearance of Ratchet challenges
The skyboarding makes for a good variation from shooting things, and the armour system is brilliant. I also like the mods, but they ought to be cheaper.
Onto the game in a nutshell:
Ratchet and Clank are vacationing on Pokitaru- a beach planet- when a little girl asks them to do some stunts and kill robots. They do, while she teaches ratchet about things like how pressing the L and R buttons will make him crouch o.O
She gets captured and our heroes follow her across the galaxy, discovering a race called the Technomites, all the way up to a disappointing fight with the antagonist, Emperor Otto.
All in all, a good game, but not a good Ratchet and Clank game.