i ran into some issues with the gui. i assume it was made for a higher resolution screen than i have and it ended up covering itself in some parts, for example i couldn't see how much purple powder i have because it was covered by a building icon.
getting to the end was kinda annoying, but overall i enjoyed the game. i think it would be funny if instead of spacemen, you recruited slave aliens and that's why they would be running away, but that's up to you.