Very cool concept. Reminds of games like Quadrilateral Cowboy, just in a much slower sense. It is slow, but hey - that's what you expect on a mission to mars. Good work! The visuals, sound, and game play are a solid aesthetic, I can't recommend any improvements as this is 100% solid experience all around. Nice.
Also I knew I knew your name from Youtube! It was really cool for you do the cross-over with Brackeys. (I'm not rating high because of that - it was a good game without my bias)