Stalker Pack: Includes the base game, all Hunter Edition content and the following early multiplayer unlocks: for players who like to stalk their prey from the shadows the Stalker Pack provides early multiplayer access to the deadly semi-auto Jackal shotgun. This powerful, close-range shotgun comes with a unique silencer attachment, custom weapon skin and two exclusive themed in-game dog tags.
Overkill Pack: Includes the base game, all Hunter Edition content and the following early multiplayer unlocks: the Overkill Pack features early multiplayer access to the Typhoon assault weapon and skin. Spewing 500 rounds a second, the Typhoon gives players the ability to go guns blazing to take back the Liberty Dome. Also included are two exclusive Overkill themed in-game dog tags.
Predator Pack: Includes the base game, all the Hunter Edition content and the following early multiplayer unlocks: the Predator Pack delivers early multiplayer access to the Feline submachine gun and exclusive camo. With an extremely fast rate of fire and a 60 round magazine the Feline is highly effective and deadly, at short range.
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I feel all 3 of these "packs" should be offered as a bonus to all pre-orders regardless of where they purchased a copy. When bonus' like these get split up amongst the retailers, customers lose. I urge Crytek and company to please consider giving a consistent pre-order bonus across all retailers.