Quite simple game, the art is pretty cute and the gameplay is easy to grasp, though controlling the ship is still challenging and needs some learning. Having red dots on the map on which direction the planets are are quite a good addition.
One thing I was not sure about is what is the end goal, or is it just survive as long as you can? Also what does different materials do, is it to fix ship or sth else since I think only green is fuel? Might be that I miss a few things as well. Some clearer information in game would probably help.