In celebration of the upcoming WAR! Update, Team Fortress 2 will be hosting a Free Weekend for players that don't already own the game starting this Thursday night as soon as the update goes live. Play the full game for free including brand new maps, special items and more!

Start pre-loading now and be ready to play as soon as the Free Weekend starts.

Requires that you have Steam installed.
Get the full article at store.steampowered.com