Again, I haven't played demons souls, so i'll wait till I get a ps3 then give it a go.

plants vs zombies I played to the point of an addiction. i've got around 100% on it (my tree of wisdom is around 200,000 feet)

Never Sid Meier's Railroads and not to sure if I will.

Xcom, I don't know much of, so I'm gonna wait for some trailers before I make a decision.

Oh and if you want to play a difficult game, play Sniper Ghost Warrior. Its not difficult in terms of game play, its the AI and the bugs. I s*it you not, the enemies you fight are the equivalent of f*cking gods.