The official Ghostbusters video game website has posted a pre-order page, which pretty much spells it out – there are four retailers with pre-order exclusives in North America;
Gamestop (t-shirt and GB2 Multiplayer skin)
Wal-mart / Sam’s Club (metallic pack)
Amazon.com (Slimer Edition)
– Exclusive Slimer Edition PS3
– Exclusive Slimer Edition Xbox 360
– Exclusive Slimer Edition Wii
Best Buy
Best Buy has not one, but two multiplayer skins, both in yellow jumpsuits (a la the Best Buy logo) – one is a jawless ghoul (dude needs a name) and Jock Mulligan (the mayor we’ve seen in the trailers, voiced by Brian Murray-Doyle.)
Thanks to Bannen and Umbrella Corp for the pics and links.