Here are the best backward compatible Xbox 360 titles in the Ultimate Game Sale

The Witcher 2: Assassins of Kings features a thoroughly engrossing, mature storyline that defines a new standard for realistic,non-linear game narration. In addition to an epic story, the game features a complex combat system that uniquely combines deep tactical elements with dynamic action.

In Deus Ex: Human Revolution, you play Adam Jensen, a security specialist, handpicked to oversee the defense of one of America's most experimental biotechnology firms. But when a black ops team uses a plan you designed to break in and kill the scientists you were hired to protect, everything you thought you knew about your job changes. At a time when scientific advancements are routinely turning athletes, soldiers and spies into super-enhanced beings, someone is working very hard to ensure mankind's evolution follows a particular path, and you need to discover why - the decisions you take and the choices you make, will be the only things that can change it.

When an immense mining ship, the USG Ishimura, comes into contact with a mysterious alien artifact in a remote star system, its communications with Earth are mysteriously cut off. Engineer Isaac Clarke is sent to repair the Ishimura's communications array, but he arrives to find a living nightmare-the ship is a floating bloodbath, the crew unspeakably mutilated and infected by an ancient alien scourge. Clarke's repair mission becomes one of survival as he fights not just to save himself, but to return the artifact to the planet ... at any cost.

Tag, grind, and trick to the beat in SEGA's hit game Jet Set Radio! Fight for control of Tokyo-to, mark your turf with graffiti, tag walls, billboards, and even rival gang members! Perform tricks and flips on magnetically driven in-line skates, but watch out for the local police force! Now on Xbox Live Arcade, Jet Set Radio is part of Sega's Heritage Collection series and now features lush HD visuals, developer interviews, and amazing fan-created graffiti.

Vault-Tec engineers have worked around the clock on an interactive reproduction of Wasteland life for you to enjoy from the comfort of your own vault. Fallout 3 includes an expansive world, unique combat, shockingly realistic visuals, tons of player choice, and an incredible cast of dynamic characters. Every minute is a fight for survival against the terrors of the outside world – radiation, Super Mutants, and hostile mutated creatures.

Gears of War 3 is the spectacular conclusion to one of the most memorable and celebrated sagas in videogames. Developed by Epic Games exclusively for Xbox 360, "Gears of War 3" plunges players into a harrowing tale of hope, survival and brotherhood. In "Gears of War 3," players fight on as Marcus Fenix, the grizzled war hero and leader of Delta Squad. Eighteen months after the fall of the last human city, the war against the Locust rages on. Meanwhile, deep beneath the surface, a fearsome new threat is infecting the planet from within. With survivors scattered and civilization in ruins, time is running out for Marcus and his comrades as they fight to save the human race.

New from Valve — creators of Counter-Strike, Half-Life, Portal and Team Fortress — Left 4 Dead 2 is a new game that casts up to four "Survivors" in an epic struggle against hordes of swarming zombies and terrifying "Boss Infected" mutants. Are you ready for the Zombie Apocalypse?

Winner of over 30 'Game of the Year' awards, 'Portal' now comes to the Xbox LIVE Arcade! As unwilling test subjects in a sinister laboratory, players must break the laws of physics using 'portal' technology to solve puzzles and survive. Unlock the full game to experience the complete singleplayer story, gain access to all 14 new bonus maps, and get a glimpse behind the scenes with developer commentary!

As agent Rico Rodriguez, your orders are to find and kill your friend and mentor who has disappeared on the island paradise of Panau. With the unique grapple and parachute combo, BASE jump, hijack and create your own high-speed stunts. With 400 square miles of rugged terrain and hundreds of weapons and vehicles, Just Cause 2 defies gravity and belief.

Betrayed by the ruling families of Italy, a young man embarks upon an epic quest for vengeance.To eradicate corruption and restore his family's honor, he will study the secrets of an ancient Codex, written by Altaïr. To his allies, he will become a force for change - fighting for freedom and justice. To his enemies, he will become a dark knight - dedicated to the destruction of the tyrants abusing the people of Italy. His name is Ezio Auditore da Firenze. He is an Assassin.