I liked the concept and liked to play similar 2d games on mobile. However the demo did not engourage me to buy full game. My biggest bummer was that it was a bit unclear when the plane would be able to land and when it just hits the run way and flies back up. This would maybe have been quite acceptable if it would have taken off immeaditely or something, but it looked awful when the plane sinked under runway and only then started to emerge from under ground.

Another thing was tutorial. First I did not like that my island was next to my guardian wall in the beginning which broke immersion since I could not start working with planes until they came nearer. Only later by pressing buttons I learned that I could move the island to better position. This should maybe have been the first thing in tutorial. Then I almost quit before end of tutorial when the hot air balloon turn came. It took some time to get it to land and I was told then that these are only used in hard mode. From user perspective it would be better to have this as separate tutorial for example when choosing hard mode.

Probably trying the game later also, but this was just my first impressions.