Glad you liked the visuals and concept. I really appreciate you taking the time to play and share your thoughts. When you say the game is confusing, could you let me know what specifically threw you off? For example, was the damage/loss-of-control mechanic unclear? I'm definitely open to improving the feel and clarity.
One thing I can think of that I haven't explained is that If you don't change the code and propellers break your drone will travel in the direction of the broken propellers. Using a different code helps stabilize by changing your x and y direction to either -2, -1, 0, 1, 2 pixels every tick so this why there are 5*5= 25 combinations.