Gamification- how to step by step

Hi All, came across this article about Gamification at the following:

 http://blogs.articulate.com/word-of-mouth/using-gamification-to-transform-your-learners-from-angry-birds-into-learning-ninjas-2/

And I loved the blender Game approach

http://articulate.demos.s3.amazonaws.com/green-monster/story.html

I want to build in SL2  a training module on choosing the right foods to eat ... Seeking help on how the "green-monster" was created... clues to the interactivity back-end, what variables,  set up of triggers etc.  I figured out transitions were used for the animation between slides... Can anyone please help me out?

Thanks in advance.

Carmelo