The winter sales are starting to heat up. This week you can pick up Ms. Splosion Man and Streets of Rage 2 for 50% off through the Xbox Live Marketplace. Ms. Splosion Man will cost you 400 MSP, or $5, and Streets of Rage 2 is going for 200 MSP, or $2.50. Both are great games that any co-op gamer will enjoy. These games should be on sale from November 15th through the 21st. Check out Major Nelson's blog for all the Xbox Live Marketplace deals of the week.