7. A Promise to Keep (Assassin's Creed)
Instead of just diving into memories Desmond-and his OC roommate-stumble upon a piece of Eden that actually sends them to the time periods of his famous assassin ancestors. As if the Templar and the Assassins weren't enough Desmond and his friend must also deal with the Hollows, a brother race to the God-like-precursors who scourer the time stream in order to look for shards of a powerful crystal that will give them the power to take over the world! It's a race against time but thankfully Desmond's friend has a secret that might just give them the edge they need to save the universe. (What is it? That's up to you to decide. The OC can be male or female and can have a relationship with Desmond. Also you don't have to just go to the time periods from the game. Have fun and make sure to give me credit for-and a link to-your fic.)