Buy one video game, get one 40% off at Amazon

Amazon is offering a Buy One, Get One 40% Off on select Video Games for DS, PSP, PS2, PS3, Xbox 360 and Wii. For a limited time, you can buy any one of their selected titles and get a second title of equal or lesser value 40% off the normal selling price. This offer is valid while supplies last. (Thanks Madame Deals.)