I love Shadowgate, DejaVu and Uninvited and you absolutely nail every aspect of those games.I see now too that you worked on Beyond Shadowgate as well which is super cool and also a really great game. However, I did encounter a game breaking bug just now (I see it was mentioned in a comment from 2 years ago below as well, prior to the newer release). The only thing I can say is that I saved and quit once or twice since having used the items mentioned below *SPOILERS BELOW*
I have the space suit and mag boots on, but throwing the rock at the door latch still sucks me out of the ship and I get game over. Have to start over as i'm completely soft locked now. Still loving the game but hope you find a fix for it at some point