Left 4 Dead 2 gets "free weekend" starting today

Valve has announced another free weekend of play as Left 4 Dead 2 drops its price from later today until Monday, celebrating the spooky holiday with 4-player co-operative zombie slaying.

New players can start pre-loading L4D2 and they also introduce a new achievement called ‘Good Guy Nick’. To earn it you have to help ”free weekend players” survive a campaign.

The studio practially threatens us with having to ”talk to each other” over Internetz to find out who is a free weekender to grab our new achievement. More info on the L4D Blog.