Microsoft is doubling down on a known strength by confirming that the Xbox Series X will launch with "thousands" of games, leveraging its years-long backward-compatibility efforts, in comparison to Sony's mixed messaging on PlayStation 5's backwards-compatibility capabilities. "With more than 100,000 hours of play testing already completed, thousands of games are already playable on Xbox Series X today, from the biggest blockbusters to cult classics and fan favorites," Xbox Series X Director of Program Management Jason Ronald wrote in a new blog on Xbox Wire.