Dust: An Elysian Tail, Deadlight, Mark of the Ninja, more 50% off on Xbox Live 

Dust: An Elysian Tail, Deadlight, and Mark of the Ninja are all currently 50% off on Xbox Live, according to Major Nelson. The full list of games on sale is also through here, but we've got a tasting below, courtesy of CVG.

• A World of Keflings - 400 MP (50% off)
• Axel & Pixel - 400 MP (50% off, Gold exclusive)
• Deadlight - 600 MP (50% off)
• Dust: An Elysian Tail - 600 MP (50% off)
• Mark of the Ninja - 600 MP (50% off)
• Mercury - 200 MP (50% off, Gold exclusive)
• Pool Nation - 400 MP (50% off, Gold exclusive)
• Puzzle Arcade - 400 MP (50% off, Gold exclusive)
• Quarrel - 200 MP (50% off, Gold exclusive)
• Retro City Rampage - 600 MP (50% off, Gold exclusive)
• Swarm - 200 MP (50% off, Gold exclusive)
• The Misadventures of P.B. Winterbottom - 400 MP (50% off)
• Trials HD - 400 MP (50% off)