Resident Evil 6 is a very good game overall. It will let you move and shoot which is a big improvement from Resident Evil 5 . I like the campaigns with Leon and Chris especially. There are some really good stories for the campaigns .My biggest complaints are 1. Too many quick time events . 2. Too few save points in the game .

The last I heard is that Aliens: colonoal Marines was scheduled for February 12,2013. It has been delayed several times so another is definitely possible.

I would go with Halo 4 but both seem like good choices . Halo 4 will have a new story about Master Chief , a new race being introduced -the prometheans ,you can play the campaign co-op ,the new spartans ops will be co-op and they will have the multiplayer mode with a variety of different maps and scenarios .

Halo

Resident Evil

Saints Row

Fallout

Elder Scrolls

We are all ultimately responsible for the high number of sequels out there. When we find a game that offers some good characters ,entertaining gameplay and an absorbing world we want to see more of it.

I like games that have really creepy music and atmosphere ,that make me uncertain what lies around every corner, where you don't know what is safe and what is deadly and you always have to be alert to survive.