Here is a setup with water for the BGE! - animated water - water depth fake - real time refraction fake
Looks beautiful, I would suggest adding a couple more images of things like the water with sand underneath it, just so people can see what it looks like in a more applicable situation.
Looks amazing great job and thanks very much for sharing.
help pls how to play your game in BGE
you press P once your engine is set to "blender game"
I haven't downloaded it, but that looks really nice. Great job!