--OkeyDokey-- on 17 May 2009
You don't need to have played previous game in the series to enjoy Ratchet and Clank. There's no real continuity in the story and they're all pretty much the same game with minor improvements over the years.
Again, I'll use Gametrailers to try to convince you :P
http://www.gametrailers.com/video/review-hd-ratchet/26714
