The example code needs to be altered to use "RG" instead:

RG.init(this);

Then it goes! :)

kb, http://www.riftgame.com/

Indeed!

I recommend you to have a look at the Tutorials (in the tutorial/ directory of the library).  Those are up-to-date and are more adapted to the current API of geomerative.

Thanks ricard - btw, my first googling for "geomerative" came up with the 0.9 alpha version rather than the current edition via this page -- I only ran across the current version a few days later and gave it another go. You might want to spruce up that link too?

Now very keen on using it, the tutorials definitely got my imagination going :)

kb, http://www.riftgame.com/

Thanks for pointing that out.  I've just fixed it!