Indeed, everyone does like bonuses because Amazon.com is throwing one in if you pre-order Ninja Gaiden II through them.  It's actually all quite clear on the site's Ninja Gaiden II order page. 

If you pre-order through Amazon, they're going to throw in a free $10 Amazon.com Gift Card.  Put it toward a future game purchase, if you'd like, or get something nice for your mother.  It's a gift card, the possibilities are endless!

The purchase will qualify for Amazon's free Super Saver Shipping of course, being over $25 and all; that also means you'll get the game later than someone who chooses the pricier (quicker) shipping options.  But if you're that eager to get your hands on the game, you'll probably want to head to your nearest game store, not a website.

Go ahead and click.  Ryu Hayabusa demands it -- and we cannot resist his sexy ninja charms.