I have been a HUGE Ratchet and Clank fan since the PS2 days, playing each game until every weapon unlocked and hidden item found. I found the gameplay very poor with the tower defense part of the game. There was NO feeling of exploration or discovery in this game as you were continuously having to return to defend your base. I returned the rental within days frustrated and barely completed two worlds. You can tell others hated it as well as it is selling on Gamefly for pennies on the dollar. I don't recommend you waste a valuable slot in your cue for this disappointing title.
I love Ratchet and clank. I've been playing them for a long time and have been looking forwatd to this game. But this game was the biggest appointment ever. It really didnt stick to the normal story lines. It was boring and redunant.. I rather drink a glass of water then play this game. Complete waste of time.