This is a simple chapter addin that I whipped up in a few days for my chapter tutorial here. It overrides chapter 2 with a bunch of levels of my own creation from the NotWOG2 project. Special thanks to those who helped:

-- XDBoy, for the awesome intro movie (created with an early alpha version of GooVIE before it was released)
-- xanax, for the artwork in CrushingTest
-- puggsoy, since I loosely based this off his "Puggsoy's Island" mod
-- goomatz, for his XSL knowledge

This is a demonstration on how to create sinusoidal linear motion, using a piston to transfer rotational into linear motion.

This is a playable level, but to see how it works, edit the level and turn visualdebug on, and adjust the minx to -1000 and maxx to 1000. Then scroll left to see the piston.

My first custom chapter, basically a section of Chapter 2 containing three levels. Primarily a test to see how chapters work and how to make one.
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The levels here are pretty easy, I just made them for the chapter. I initially started this so that I could make a tutorial on how to make chapters (which I'll still make), but it turned out to be more complicated than I thought.
Hope you like it!

Demonstration of how to make rotating, walkable geometry. This is a simple test level (playable, but not very interesting) in response to a forum question.

Note how the planet is not exactly positioned on the radialforcefield, to avoid an ODE crash when the geometry is exactly aligned with the force field.

Screenshot 2 also demonstrates that, contrary to popular belief, it is possible for strands to break given enough force. The chain is being stretched by friction of the Ivy balls on the planet, and is about to snap.