I had fun! Really solid gameplay that made me consider every move. Graphics and sound are minimalist, but in a cool, retro way. I'm not 100% clear on the rules. I lost after I bought an upgrade (that I could afford).
As for the theme use. It was ok for one room, but if you submitted this game for "limited space" two months ago, it would be perfect :)
Over all- really cool puzzle game! Keep up the good work!