I'm very much looking forward to this. Basic rundown of the games:



Ratchet & Clank: Started it all. Very basic compared to the other two, as there is no upgrading weapons beyond the gold weapons, but the story is charming, and we are introduced to Quark, the best character in the series.



R&C Going Commando: Much larger in scale to the first game. A couple new open world areas. Weapons are now upgradable. More variety in atmosphere, weapons, and enemy types. More challenging. Only issue is that the main badguy was pretty boring...that is until the wonderful twist at the end. Also, the Lava Gun is the best weapon ever.



R&C Up Your Arsenal: Story wise, this is my favorite, as it introduces Dr. Nefarious. It was funny and silly. It felt shorter than the second game but longer than the first. The weapons all around were probably the best here. Plus the 2D Quard side game is one of the best things ever made. Also many monkey jokes with Quark and his little simian pal. Also the weapon upgrade system was much deeper and more fleshed out in this one.



All in all my favorite game in gameplay was Going Commando, but my favorite story was Up Your Arsenal. Love this series.