A simple game but with more gameplay depth that you would think at first sight. I can see the attention to detail and polish when it comes to giving you a bit of extra options like going "out of the box" and having some extra time when you bump into your own CO2 emissions. My usual strategy was circling from the edges gradually to the middle.
Pretty addicting game with good visual indicators / vfx for everything, got up to around 5000 eventually :D.