Valve have released a few details on the upcoming zombie masher Left 4 Dead 2.

Those who pre-order on PC will get access via Steam from 27th October, everyone else will be able to download it from 3rd November.

If you’ve got Xbox Live Gold then you can play the demo from 3rd November, with Silver members getting access from 10th November.

The Left 4 Dead 2 demo gives players the chance to have a go on a campaign by the name of The Parish. Four people or less can play the game, with the option for split-screen (on Xbox 360). The new boss Infected and all the new melee weapons are featured in the sampler.

The full game will be released on 17th November on Steam, and will come to shelves on 20th November.

There’s loads more information on the game’s hub.