Hey guys, I think they have completely stopped this project. About 3 years ago (2017) I asked for a refund before the routes were released (lack of activity from what I saw) and one of them told me they were considering releasing on a route to route basis for people who already paid.
They did follow through with that, but like everyone else I haven't had an update since 2 of the routes were released. I only paid $10 at the time (I think it was a preorder or a special?) and consider it fulfilled due to the 2 route releases and that they did correspond with me when I contacted them at the time.
For prospective buyers, I wouldn't recommend dropping money on this if you're expecting a full game since it's been 2 years (Feb 2018) since the second route was released. It's not really worth the $20 as currently advertised.