In September on Xbox One, build and manage a maximum-security prison in Prison Architect, then achieve victory in the battle between the machines in Livelock. On Xbox 360 and Xbox One via Backward Compatibility, use the Force and fight in the Clone Wars in LEGO Star Wars III: The Clone Wars, and enjoy classic, retro gaming in Sega Vintage Collection: Monster World.

All games will be available exclusively for Xbox Live Gold members for a limited time as part of Games with Gold. With Xbox Live Gold, you get the most advanced multiplayer service, free games, and exclusive member discounts on games in the Microsoft Store — get Xbox Live Gold today to get in on the action!

Prison Architect (Xbox One - $29.99 - Available September 1 to 30)

Take control of designing, building, and running a maximum-security penitentiary in Prison Architect. See the results of your grand designs play out on the lives of your inmates, as you create a utopic rehabilitation center or a Super Max prison. You’ll manage everything from staffing, security, and maintenance to escape attempts and riots. It’s your prison, your rules.

Livelock (Xbox One - $9.99 - Available September 16 to October 15)

Break the infinite cycle of war between the machines in the twin-stick shooter Livelock. Control one of three mechanical chassis types – Hex, Vanguard or Catalyst – to defeat your mechanical enemies in this three-player co-op shooter as you battle to unlock Eden and revive humanity.

LEGO Star Wars III: The Clone Wars (Xbox One and Xbox 360 - $19.99 - Available September 1 to 15)

Journey to a galaxy, far, far away and fight the Separatist army in LEGO Star Wars III. Based on the “The Clone Wars” animated series, experience massive ground battles, boss fights, and multi-layered space combat in the uniquely humorous LEGO style. Expanded abilities, weapons, and characters in over 20 story-based missions make this the most action-packed LEGO game to date.

Sega Vintage Collection: Monster World (Xbox One and Xbox 360 - $9.99 - Available September 16 to 30)

Bring peace back to Monster World in three classic action RPG titles from the past in Sega Vintage Collection: Monster World. Relive the fun of the Wonder Boy series, including the final chapter never released outside of Japan. This is retro adventure gaming at its finest.