Thank you for testing. Yes I noticed, that between 90 and 180 Degree the drone behaves weirdly. That has already been fixed and if you want to, you can have a new look at it in about 2-3 days in the next update. That update will only include some fixes, proper buildings with collision and some minor additional features. Now that I am no more under the Game Jam stress, I am reworking the whole Graphics and general structure of the code, which will make it easier to add new stuff.
There is no goal yet. This is rather a way for me to try out mechanics and see how people react to them. I realised that I had too much fun coding this project, that in the end, instead of making this a proper complete Game Jam game, I decided to create a real complete minor/medium sized game, which will be finished approximately in a month or two.