Dollar Dash is your solitary Xbox Live Arcade offering this week, with a host of game modes, features and all-out fast and frenetic arcade action for several players. There's a trailer of it below if you fancy a look. You can also snap up Mass Effect 3's DLC swansong with The Citadel. Take heed though; you'll need to download the main paid part and the free second part of the DLC, or it won't work. Elsewhere in the DLC section, there's a new car pack for Forza Horizon and new add-ons for Resident Evil 6 and DmC. Finally, there's deals on SEGA fighting games, and some other selected fighting games, as well as the sublime NiGHTS into dreams... Check out all of the XBL Marketplace content below: Xbox LIVE Arcade Dollar Dash - 6-Mar - 800 MSP Game Add-ons Resident Evil 6 Siege Game Mode - 5-Mar - 320 MSP Resident Evil 6 Map Bundle Pack - 5-Mar - 400 MSP DmC: Devil May Cry Vergil's Downfall - 5-Mar - 720 MSP Forza Horizon March Meguiar's Car Pack - 5-Mar - 400 MSP Mass Effect 3: The Citadel - 5-Mar - 1200 MSP Rocksmith Blue Oyster Cult Song Pack - 5-Mar - 640 MSP (240 MSP per track) Rocksmith Living Colour - Cult of Personality - 5-Mar - 240 MSP Rocksmith Violent Femmes - Blister in the Sun - 5-Mar - 240 MSP Deal of the Week SEGA and Fighting Games Titles - 5-Mar to 11-Mar NiGHTS into dreams… - 400 MSP (50% of) Sonic the Fighters - 160 MSP (60% off) Fighting Vipers - 160 MSP (60% off) Virtua Fighter 2 - 160 MSP (60% off) Virtua Fighter 5: Final Showdown - 400 MSP (67% off) Karateka - 400 MSP (50% of) JoJo’s Bizarre Adventure - 800 MSP (50% off) Sales & Specials Kinect Central: Your Shape 2012 Bundle Pack: Back in Shape Lose it and Keep it off - 5-Mar to 11-Mar - 200 MSP (69% off) Scratch & Match Bionic Commando: Rearmed - 400 MSP Bionic Commando: Rearmed 2 - 600 MSP Chain Reaction Ninja Gaiden 3 Great Scythe - 120 MSP Ninja Gaiden 3 Metal Claws - 120 MSP Ninja Gaiden 3 Ninja Pack 01 - 400 MSP Ninja Gaiden 3 Ninja Pack 02 - 400 MSP Games on Demand Kung-Fu: High Impact - 5-Mar The Cursed Crusade - 5-Mar Harley Pasternak’s Hollywood Workout - 5-Mar Vid >> http://www.viddler.com/v/141233ea Source - X360A