It's in your game, right now.
You just need to go here...
And then select this.
And you get this:
We're pretty pleased with it, frankly. An entirely new campaign for you to explore, for free. *And* the game is at 40% off for the next five days! If you've already purchased, please tell a friend!
Here's a brief video of Jim blathering about it.
The soundtrack can be purchased here.
As ever, if you have any issues let us know. (And maybe follow us on Twitter.)
More soon.
-BR
