This is an excellent game. I love the concept and gameplay. I have nothing to complain about except that there are some bugs.
1. When you're underground, the game is very laggy (you probably know this already)
2. When you dig up the mushroom (the red & yellow colored tile) and pick up the mushroom, you're still able to scan the place where the mushroom was, even though it isn't there.
3. When the spaceship said I needed 21 data for the next upgrade, I collected only twenty. When I went back with one more, the number dropped to zero but I didn't get an upgrade. Confused, I collected one more data, and the number changed to -1. I'm not sure if the fact that I broke the tiles underneath the spaceship caused that issue (as a programmer, I know that very strange things can cause certain bugs ;)