I don't know what an appimage is but it worked great. (I had to figure out how to resize my virtual machine because the screen wasn't large enough.) The graphics really are great, and make you wonder about the world. I particularly like the white tree top right, and the colonists. There is a lot of nice detail in this game.
I didn't finish the game because it takes a while. If you had some engaging mini-game in it, it could be a lot more captivating. I also wish I could select colonists via the rectangle method, i.e. dragging the mouse and generating a selection rectangle.