Valve has kicked off the community-led Invasion event for Team Fortress 2, a month-long sci-fi spectacular featuring new maps, weapons and cosmetics.
You can buy a pass for the event from the in-game store, which will give you a Coin that will track your kills and stats during the event, and also give you a chance of earning special Invasion cases as random drops. These are filled with goodies created by a community team that has been working closely with Valve. A portion of the cash from sales during the vent will go to these community creators.
Maps include an alien-infested version of classic 2Fort, a farmhouse packed with strange technology in Probed, a beer factory in Watergate, and another agricultural location in Byre. Weapons include a laser baseball bat for the Scout, a raygun sniper rifle for the Sniper, and an alien pistol for the Spy.
Then there are a number of cosmetic items and a new taunt which sees an aliens burst out of your chest, John Hurt style. Check out more in the launch trailer below.