It's available on steam.
Also if you haven't played the previous expansions and addons, than you can get the complete pack.
Its published by Nordic Games so it may cause some confusion among those familiar with DreamCatcher Interactive. Dream Catcher was bought by JoWood studios in 2006..
In November 2011 Nordic Games Holding announced that they had acquired DreamCatcher Games and would be turning it into a publishing label of their subsidiary Nordic Games GmbH.
Nordic Games Holding had only just previously bought JoWooD and The Adventure Company in August also turning both brands into publishing labels of Nordic Games GmbH.
Congrats to Nordic Games for the takeovers.
At least they'll do something different than over9000 Wii musics games :P
10 bucks for 5 maps, really, I sh*t bricks when I saw it...