The game's introduction has been free since June, but Paris marks Hitman's first fully-fledged portion, and it's a great example of what the game offers. This free version of the level includes everything you'd get if you'd paid for it, and it's free from now until January 5--though if you download it now, it will remain free for you after that date.
Hitman's Holiday Pack is also available for nothing right now after being introduced this time last year. It includes two thieves attempting to ruin Christmas by stealing everyone's presents, and it also lets you throw a brick at Santa (don't try this at home).
Link to steam here.
Source: GameSpot
