Sony's whacked a release date on Insomniac's upcoming co-operative adventure, Ratchet & Clank: All 4 One.

The four-player combative platform will hit retail on October 18th in North America and October 19th in Europe.

In addition to the release date, Sony's also disclosed a bunch of retailer exclusive bonuses for the US. From Amazon you'll get a T-Rex Morph Weapon Mod which turns your enemies into baby dinosaurs, and from Best-Buy you'll get a deadly flame-thrower. GameStop's got the best pre-order bonus though, in the form of Mr. Zurkon, the hilarious robotic sidekick that picks off your enemies while insulting them. If our memory serves correctly Mr. Zurkon was one of our favourite "weapons" from Ratchet & Clank: A Crack Of Time, so it's a bit of a shame to see him relegated to the preorder bonus scene. Mr. Zurkon will not be pleased. Finally, Walmart's got the Sheepinator which, yes, turns your enemies into sheep.

Gee, this is a Ratchet & Clank games alright. There's a new trailer after the jump. Check it out.