It's on Origin!!
https://www.origin.com/en-gb/store/browse?q=dungeon
Yup! and I play it on windows 7 ok. Not sure about windows 8/8.1
War for the OverWorld is ok but I think they are trying to be a bit too cleaver with some of their thinking in the game, but then it's still in development and I just love DK and DK2. Change is good?