Walmart's online store has a pretty sweet promotion going on. For $197 USD, you can purchase a Nintendo DSi (you pick the color) and your choice of three games and one accessory. Among the games listed are both versions of Mega Man Star Force 2 (xSaurian/xNinja). Of course, if SF2 isn't to your liking, there's lots of other games to choose from.
This deal is for a limited time only, and only available on Walmart.com. Visit the bundle's product page here for more details.