A little earlier than usual, Microsoft announced what games will be available for Xbox Live Gold subscribers next month. This month there are five games instead of the normal four, laid out as such:
Castlestorm - December 1-15
Sacred 3 - December 16-31
Operation Flashpoint: Dragon Rising - December 16-31
The Incredible Adventures of Van Helsing - December 1-January 1
Thief - December 16-January 15
Thief was previously available on the Xbox 360, and Castlestorm was previously available on the Xbox One, so if you are just dying to revisit them on a different console now is your chance to do it for free again.