Hmmm, you've got some good games there, and by good games I mean all the games in the Orange Box. Not saying Assassin's Creed is bad, but it is repetative. You get a mission to kill someone and once you kill them you get another person to kill and so on. The only problem is you do every mission in the exact same way. Gather info by beating it out of people and then once you find where the guy is you stalk him and then kill him, rinse, repeat.

The Orage Box on the other hand has the amazing Half-Life games. Those alone are worth buying the whole collection. Portal is awesome and really unique, but unless your trying to beat the challenge stages there really isn't any replay value. Team Fortress is also fun but prepare to get your butt handed to you by the people that have been playing since day 1. Half-Life is frikin amazing! Half-Life 2 has improved graphics over the PC version that was released. The 2 episodes that follow are really good, especially Episode2. And by the time your done with them you'll be begging for episode 3 or Half-Life 3 (or whatever they decide to release).

(I even got my name from Half-Life)

Hope this helped! (play the original with the expansion packs if you get the chance. You'll still be able to play Half-Life 2 even if you've never played 1)

Let me know which one you end up getting, and what you think!

~blackmesaboy