Gamepro: "Ah, the pre-order bonus. Just about every gamer has encountered the often lackluster but occasionally awesome pre-order incentive. To entice gamers to pre-order a game, publishers or retailers often give away a freebie of some kind. The game industry has seen many pre-order deals, most of which are forgettable. But there have been quite a few noteworthy pre-order bonuses too.
Our criteria for the consideration an item was simple -- it had to be offered as a pre-order incentive, either by the publisher or by a large retailer, and it had to be an item (not a price discount). There have been countless pre-order deals over the decades -- but these are the sweetest ones."