Another month means more free games to add to your library with Xbox’s Games with Gold. This May you will be getting CastleStorm: Definitive Edition for Xbox One which will be available from May 1 through May 31. For Xbox 360 Mafia II and F1 2013 will be available for free. Mafia II will be available from May 1 through May 15 with F1 2013 available for the end of the month from May 16 through May 31. Have a good time gaming!