Reaaally original, haven't seen anything like this before! I think it would be nice to be able to change the direction of flying anytime we want, not just in the sides of the screen. Sometimes it was hard to find the right color, but that may be just my skill issue :D Pro tip, when playing the wing flap sound, when I spam the button, the sound gets cut and then it plays a new one, where instead it should still be left to play the rest, but create another sound on top of it, both being played simultaneously. So in Unity you would probably just create another audiosource with the same sound, play it, and then destroy it when it's done playing (I'm guessing using a prefab). But hey, as a first game in Unity, great job!