I have been trying to work a little in GameBlender over the last 6 or so months (but I don’t have any tutorials so it’s kinda difficult). Um… this iss a rather complex question and I don’t know exactly how to ask it but here goes…
When moving a character along a horizontal plane that has a hill, how do you put in the “physics” for the character to tilt with the floor? I may have not said this quite clearly but I hope someone can understand it. 
Any help would be great, thx.
ROTFH is what u want to turn on on your dynamic actors settings… this mean he will rotate depending on the face he is standing on =)
u will also need to edit some of the floors dynamic material settings
below is a demo
select the floor to see its material properties:
FH NORM is on- i dunno what this does, lol
FH damp- the damping of the tilting… EX: 0 damp = super springy tilt
FH dist- the distance in which the actor will tilt EX: FH dist = .5(when actor is 0.5 distance away from ramp, he will tilt)
Restitution- bouncyness of collisions
Friction - EX: 0 = ice
FH force- the amoutn of tilt force the actor will receive
heres the .blend of the demo:
http://mysite.iptic.com/blengine/skate.zip
press UP to skate forward down the ramps 8)
see ya