I backed this for my son with the alpha/beta access. After a lot of effort to get it working through Steam, he found it be very sluggish for a while, which improved. It's an interesting concept and style, but my son found it very uninteresting and several encounters were incomplete. That is to be expected with alpha, and he wanted some view into how games developed and changed.
Between that and a very busy school year, he put it aside for a long while and plans to try it again this summer. There's been a lot of work and detail going into the game, though I still wonder if it's enough for a substantive play at early access.