I like the game a lot. My success in the game seems to be very luck based. Sometimes I start and immediately run into a lot of resources and other times I'm traveling for what feels like minutes while only seeing asteroids. I notice that sometimes there are resources below asteroids, maybe I'd find more if they always float above them, although I like the idea that you sometimes need to dance around an enemy and an asteroid while waiting for fuel to come out the other side. Maybe a good future improvement would be some kind of radar to point you to the nearest of each of the three resources - I think that would help reduce some of the random swinginess a lot.
Excellent game. I found it to be very intuitive and a lot of the mechanics (saving gas by using the tractor to fling yourself around asteroids) feel like a natural extension of the tractor function. I've already spent a bunch of time on it and I really like the music.