I found myself losing my way after missing a circle. Maybe it's because that the scene is too empty... It's difficult for me to figure out which direction I'm heading with almost no landmark.
Thanks :-) Yes, the scene certainly needs more in it. The gates are always "north" on the map, so if the bird in the minimap is facing up, you should be able to see the next gate (providing you're not too high or too low or have flown past it already :-D ). Thanks for your feedback.