Congratulations. I hope you enjoy it as much as I do mine. Sounds like you have some great games to start out. I would definitely recommend AC IV: Black Flag if you like open world games. Even if you are not a big AC fan (I wasn't before this game) you can enjoy because it is a bit different from its' predecessors and just a lot of fun. If you like a good old school platformer the underappreciated remake of Oddworld is outstanding.
Anyway, have fun. :)