what's this, I don't even...

Aah, Counter-Strike: Source. I still remember the days when I would just get home and play it for hours on end about 9 and odd months ago.
Where I haven't played this game in a while it's not very hard for me to accurately describe it. "Army shit." Yep, that's about it, Army shit.
You'll spend most of your time, if you like the so-called "pub" servers, which quite frankly sounds like the game is alcoholic which explains a lot, where you do the same mundane tasks over and over as you spend hours of time you'll never get back on this game. Save the hostage, hold the hostage, defuse the bomb, plant the bomb.
But at least the game isn't hopless. Any players, or any member of the community really, can make their own maps, models and whatnot using the Source SDK.
And some have even coded different gamemodes for the game, my personal favorites being jailbreak and gungame. The game's not perfect, but when you find something about it you like you'll be liable to waste a ton of time on it.

Assassin's Creed.
Great game, great story. The Idea is that you play as assassin altair during the time of the third crusades and basically you just go around assassinating people, while all the while the other main character, Desmond, is being held captive in the present day. Doesn't sound like much, I know, but that's the most I feel like saying without spoiling the story.
Gameplay is also fun. when playing as Altair, you can get around using le parkour-like moves (called free-running in the game). There are some slow moments in the game, but I think that's to pace the story a bit, and the side missions can get a bit repetitive. Other than that, it's overall a really good game, and I suggest anyone to - at the very least try it if not - buy it.

Overall I'd rate it about 8 out of 10