Halo 4 is the latest to play into that retail shuffle.
Depending on the retailer you hitch your Warthog to, you'll snag some very different things: Amazon will offer a golden "web" skin for use in multiplayer and a pair of exclusive emblems, while GameStop will offer the customizable "forest" skin for multiplayer. UK retailer GAME is tossing in the blue circuit armor skin, an arctic weapon skin and six specializations – these are further cosmetic tweaks to help you stand out from the rest of the cybernetic crowd.
Other specific UK retailers have their pre-order items listed past the break, like Blockbuster (you guys still have those over there?). And if you're really looking to buy everything with Halo 4 printed on it, the soundtrack and special editions are also tempting offers.
Halo 4 launches on November 6 worldwide, exclusively for the Xbox 360.