EDIT: Hold the press! It seems development has resumed and the game isn't abandoned after all. After a gap of nearly 7 months, a hefty update arrived out of the blue. I'd uninstalled the game, so didn't know about it until now - about 3 weeks later.
The fact I kept checking back on this game periodically, rather than just forgetting about it, can be taken as a compliment to the game. I said before that the game lookED promising (past tense) but now it lookS promising (present tense!) again. This is a good thing.
I wish these Steam reviews weren't so binary - only Positive or Negative - because, ideally, I'd like to change my rating to Neutral / Pending / Let's See How It Goes From Here :)
As of today, it's been 5 months since the last update. FIVE MONTHS. This game looked promising to begin with, but remains at around 25% complete with little chance that it will ever be finished now. It really should be removed from sale. Needless to say, don't buy it.
I'm not particularly aggrieved at having spent my money on this unfinished, dead game - it didn't cost very much, and it's understood that buying into an Early Access game carries the risk that the project will never reach completion. What DOES annoy me is the damage that abandoned projects like this do to the concept of Early Access games as a whole.
After being burned by this one, I'm going to very wary of Early Access games from now on, and will likely only trust Early Access games from established devs with a solid track-record of delivering the goods. That's the real shame, because I'm sure there are hundreds of fledgling devs out there who really need Early Access support and fully intend to honour their commitments. It's horrible that unfinished and abandoned games like this one will have poisoned the well for them.