There is a good risk reward feeling when it comes to deciding between using your ores to upgrade your drone (which is essential) or saving them up to get out of the level. I often found myself risking running out of battery in order to get more ores before going back to the ship, (which is cool). The game really forces you to develop a strategy to get through each level and I could see myself spending a lot of time trying to beat it (I've only manages to get to level 2 so far). Overall it's a really interesting game and a great interpretation of the theme.