Over 1 million users signed up for Project Spark

Microsoft used the stage at E3 to reveal that 1 million creators have already signed up for the beta of Project Spark on Xbox One and Windows 8, and that they have made tens of thousands of games.

They also confirmed that this autumn some new content is to be added, namely new sci-fi content (Galaxies), a new co-op campaign (Champions Quest), and the character Conker. Here's the E3 trailer.