When I was about eight years old, I played miniature golf for the first time. I was blown away. This was so much more clever than real golf. I decided I would grow up to be a professional miniature golf course designer.
Imagine my chagrin when I couldn't find an Ivy League college offering a degree in golf course design. I'm taking this personal detour to emphasize the fact that you should never give up on your dreams, no matter how unlikely -- or stupid -- they may be. There could always be a Sharpshooter's Miniature Golf in your future.
Up to four people can play this 3D course, where slopes, pinball bumpers, and conveyor belts all react with your ball according the laws of physics. There are also warp zones that react according to the laws of Star Trek.
That's all well and good, but what's really important is that you can use all the obstacles and greens to create your own course. The only limit to what you can do is the mercy in your heart. You can even change the MIDI music file that plays in the background. I think I'll make it "The Ride of the Valkyries."