Dead Space 3 is getting the full triple-A treatment, and that includes some retailer-specific pre-order bonuses. The goodies come in two flavors, so if you plan on playing co-op with a buddy you could each claim one for maximum death-dealing efficiency.
GameStop pre-orders will get the EG-900 SMG, which as the name implies is a sub machinegun. Amazon gets the Tesla Enervator, an electrocution weapon meant to cause instant, "humane" death. These weapons join the already announced bonuses: the Witness suit, First Contact suit, Negotiator weapon, and Evangelizer weapon. Dead Space 3 is coming February 5 on PC, PlayStation 3, and Xbox 360.