1. Team Fortress 2
Valve Software . Grab it via Steam .
Well, of course. What else could it be? It's the best multiplayer shooter ever released on the PC, and you can play it for no pennies. We are, quite truly, being spoiled.
We've written about Team Fortress 2 a lot, you may have noticed. Some might say we've praised it to death. Others will be quick to point out its original 2007 release date. But this is the year when TF2 became a free game, and as such it would be barmy not to position it right at the top of the list.
Its quality lies in every aspect of the game. Beautifully and distinctively presented, it's also fantastically balanced, each class playing its own unique role across a variety of maps that, in their immaculate attention to detail and playability, could only have been created by Valve. It's also a game that's filled with personality, as evidenced by the vast amount of fiction that's cropped up around this wonderful shooter.
You get so much for no money at all. It might as well be the full game. In fact, it's not quite, but to upgrade all you need to do is buy a single item from the store. The cheapest item is 29p. That's all you need to pay to unlock a premium account - but if even that seems a bit too much, you'll lose barely anything by playing at the most basic level.
Craig re-reviewed the game this year, upping its original 93% score to a PC Gamer UK 'highest score ever' of 96% as a result of the carefully planned additions and refinements that have trickled in over the years, in what must be one of the most comprehensive post-release support campaigns a developer has ever committed to. We don't give out scores that big lightly - but not only is Team Fortress 2 the best free game in the world, it's also now one of the best in the world regardless of cost.
Found a better free game in 2011? You should totally let us know about it in the comments!