September XBL content update: Mercury Hg, RE on Games on Demand and more

Are you ready for round two with Las Plagas? Today marks the launch of Resident Evil 4 HD on Games on Demand, along with some other goodies. In addition to the HD remake update of Leon's rescue mission, Major Nelson has listed some Xbox Live Arcade games and next week's deals.
Xbox Live Arcade

• September 21: Burnout Crash (800 MS Points)
• September 21: Rotastic (800 MS Points)
• September 28: Mercury Hg (400 MS Points)
• September 21: MLB Bobblehead Baseball Battle (800 MS Points)

Game Add-ons

• September 20: Fallout: New Vegas "Lonesome Road" DLC (800 MS Points)
• September 20: Dance Central three pack (240 MS Points per song)

Deal of the Week

• September 20-26: 50% off Gyromancer (600 MS Points)
• September 20-26: 50% off Portal: Still Alive (600 MS Points)
• September 20-26: 50% off Bejewled Blitz Live (200 MS Points)
• September 20-26: 50% off ilomilo (400 MS Points)
• September 27-October 3: 33% off Might & Magic: Clash of Heroes (800 MS Points)
• September 27-October 3: 33% off Dungeons & Dragons: Daggerdale (800 MS Points)

Games on Demand

• September 20: Resident Evil 4 ($19.99)
• September 20: Star Wars: The Force Unleashed 2 ($19.99)
• September 20: MLB 2K11 ($39.99)
• September 27: Resident Evil: Code Veronica X (Price TBD)
• September 27: Crysis 2 (Price TBD)
• September 27: Blur (Price TBD)

Avatar Marketplace

• September 22: Major League Baseball Update
• September 27: Nightmare Before Christmas
• September 29: Dungeons & Dragons: Daggerdale
• September 29: NBA 2K12
• September 29: Rage
• September 29: South Park Update

Game Demos

• September 20: NBA 2K12
• September 27: Sesame Street: Once Upon a Monster