I the different damaged states the buildings can be in and how the ufo leans to one side when stearing left or right.
Some technical flaws I encountered:
Sometimes the ufo won't react to keypresses at all.
Multiple keypresses are not recognized simultaniously.
One can fly off screen. I didn't make it back from there once...

Hey, thanks for the reply. I didn't get to finish the game like i wanted to. IRL stuff came up. I have no idea how to do multiple keypresses being recognized, but im learning. Yeah, i forgot to make it unable to leave the map. It was my first game so, yeah. Thanks for the feedback though!