Most preorders include extra incentives, and Limited Editions always always sell out before the actual release. Basically, it gets people buying before reviews can dissuade them.
Man is a most complex simple creature: see what he weaves, and how base his reasons for doing so.
It is, actually. All of it falls under the term "public relations". Add that to the fact that many professional reviewers are enthusiasts, who are fans in their own way.
So the thing about games is that after you release them, at some point they're going to not make money anymore. People will buy books throughout the year. People will go see movies in theaters, then buy DVDs. So by giving you a few incentives, they hope to get as much money in their pocket as early as possible.
Comments
* "money in the bank" (committed revenues) earlier
* quicker to break even (shareholders and investors like this)
* boosts early sales figures