I know this review could be considered biased as Jeff Freels is a friend of mine and I have contributed to this and other BEAN! products from Fabled Worlds. However, since I'm being up front about my potential conflict of interests perhaps you'll take the time to read what I have to say.
Beanworld has been long in construction and I think that is reflected in the quality of all parts of it. As always, Jeff's artwork is brilliant and in particular the fantastic maps of the many and varied continents, islands and peninsulas that go to making up the habitable lands of the planet of the bean folk. Each country has its own section where the topography, fauna and sentient races present are discussed.
The beauty of Beanworld is that it provides enough detail to get any prospective BeanMaster's creative juices flowing but there is enough room to add all sorts of places, monsters and adventures of your own. Mad Roy Cram has produced a massive bestiary of Beanworld (the beanstiary) which adds so many potential opponents or allies to those found in the original rulebook. On top of this, Jeff has constructed all sorts of civilisations from the neolithic to steampunk and beyond for you to use in your adventures.
Trust me, if you like playing BEAN!, or you haven't yet explored the delights of the only D2 RPG, this supplement is a must.