Major Nelson has announced the games being made available as part of February's Games on Gold promotion.
Hyrb announced the news via his Major Nelson blog:
On Xbox One, Xbox Live Gold members can download #IDARB for free during the month of February.
On Xbox 360, starting Sunday, February 1st, Brothers: A Tale Of Two Sons will be free for Xbox Live Gold members through February 15th.
Then on February 16th, Xbox Live Gold Members can download Sniper Elite V2 for free through February 28th.