Assassin's Creed: Revelations (PS3) vs Red Dead Redemption (PS3)

When a man’s battles have been won and his enemies destroyed, what then? Where does he find purpose and meaning? To find answers to these questions, Ezio Auditore will travel east in search of the lost library of the Assassins. In Assassin’s Creed® Revelations, master assassin Ezio Auditore walks in the footsteps of the legendary mentor Altair, on a journey of discovery and revelation. It is a perilous path – one that will take Ezio to Constantinople, the heart of the Ottoman Empire, where a growing army of Templars threatens to destabilize the region. In addition to Ezio’s award-winning story, a refined and expanded online multiplayer experience returns with more modes, more maps and more characters, allowing you to test your assassin skills against others from around the world.

Red Dead Redemption is a sandbox-style action-adventure western video game developed by Rockstar San Diego, due for release on May 18, 2010 in North America and on May 21, 2010 in Europe and Australia for the PlayStation 3 and Xbox 360. It is a spiritual successor to 2004's Red Dead Revolver. Red Dead Redemption gives the player a large, open world environment allowing the player to move freely. Players on foot can walk, talk, shoot, kill, ride, run, interact with the environment, and combat enemies with firearms. Different breeds of horses are the main forms of transportation. Swimming is not an option, as the protagonist John Marston cannot swim and will drown if the player ventures too far into a body of water (though he is able to wade where the water is shallow enough).
The open world environment allows players to choose how they want to play. Storyline missions are for progress. Along with the main storyline, players can take part in random events they encounter as they explore the West. These include public hangings, ambushes, pleas for assistance, and dangerous animal attacks. Players can also take part in optional side activities ranging from standoffs, gambling, and hunting fauna for pelts and meat.