I had heard a lot of really great things about this game, and I have a friend who has it, so I thought what the heck, let's give it a shot. I was not very interested in it initially though, Coop games are not always my cup of tea, and I heard there is a lot of upkeep in the game as well.
I think after playing it, even as a beginning spirit, these concerns were confirmed in a way. There is a lot of upkeep, and coops are not always my favorite because everyone just kinda says what they can do without it sticking because everyone else is thinking about what THEY are going to do. BUT I do like a lot about the game. The fast and slow actions are really clever, and I do really like the Explore, Build and Ravage progression of the invaders. It allows you to plan ahead rather than having random things build up (I am looking at you Pandemic...making people lose before they can even take a turn...)
There is a lot going on here, I can say I will never purchase the game myself, but I would be willing to give it another go after taking off my training wheels!