BGE: How to make a fly camera

John hamilton writes:
How to make a fly camera for your game. This would be useful for testing game environments or a spectator game mode using the blender game engine.
You can find more of my videos on blenderreal.com or on my YouTube channel.

So inefficient, video tutorials… This would take me about 4 years to download using some proxy online converter, & even then, is it any good ¿