Really cool pixel art, and a nice idea!
I wish there was a feedback if you let too many impostors onto your ship or a game over. Cause with how it is now, you just fill your 6 shuttles and finish the game, not caring about if they are impostors or not, and that makes it kinda lack suspense.
Other than that, great job! I enjoyed googling stuff about people i didn't even know existed haha
First game in which I even learned something :)