Halo: Reach tallied $200 million in sales on its release day, says Phil Spencer, the corporate vice president of Microsoft Game Studios, during Microsoft's keynote Thursday morning at the Tokyo Game Show as reported by 1UP.com's liveblog of the event.

Reach, which came out Tuesday, is the final Bungie Studios-produced game in the Xbox's flagship first-person series. It's a prequel to the original Halo: Combat Evolved and tells the story of the Spartans of Noble Team. 

Source: Microsoft TGS Live Blog [1UP.com]