You could just play around with some bezier curves in Blender, but its just so much more cooler when its in the GE.
Actually I just wanted to learn how to make bezier curves so I did it in the GE.
I looked up bezier curve on wikipedia and found this animation:

So I created it in blender (bezier.blend). I then went on a created a bezier curve using the formula (bezier2.blend)
In the first blend you have to move the points before running the game, in the second blend you can move the points during the game, you can also change how detailed the bezier curve is by changing the ‘points’ property on the empty (chuck it up to 500 and the bezier becomes pretty solid looking).
What do you think, cooler then blender’s beziers?
Attachments
bezier.blend (165 KB)bezier2.blend (148 KB)