Microsoft has announced a fresh round of Xbox Live discounts on Xbox One and Xbox 360 games. The latest 'deal of the week' sale includes hefty discounts on Call of Duty: Ghosts, Thief and Tomb Raider Definitive Edition. The BioShock Infinite, NBA and Walking Dead discounts listed below are valid from now until March 31, while the others are only valid from March 28 to March 30. Xbox One Call of Duty: Ghosts, Xbox One game (33% off) Thief, Xbox One game (50% off) Tomb Raider, Xbox One game (50% off) Call of Duty: Ghosts Digital Hardened Edition, Xbox One game (20% off) Xbox 360 BioShock Infinite, Games on Demand (67% off) BioShock Infinite - Burial at Sea Episode 1 Add-On (50% off) BioShock Infinite - Clash in the Clouds Add-On (50% off) BioShock Infinite - Columbia's Finest Pack (50% off) BioShock Games on Demand (75% off) BioShock 2 Games on Demand (75% off) The Walking Dead Survival Instinct, Games on Demand (75% off) NBA 2K14, Games on Demand (50% off) Thief, Games on Demand (50% off) Tomb Raider, Games on Demand (50% off) Call of Duty: Ghosts, Games on Demand (33% off) Source - CVG