A blog showcasing the art that Shannon has done for spore, as well as some more concepts and ideas that did not make the cut. There are UI's, 3D models, mockups and more.
You can see a bit more on his blog here, showcasing some planets and trees he did: http://oceanquigley.blogspot.com/2009/08/shannon-galvins-blog.html
A showcase of old spore-related marketing material, from billboards to constructs.
An article explaining the design aspect of the spore typefont, which was used in a variety of their merc, and official products.
A blog showcasing some behind the scenes screenshots of a presentation on the game, such as biome generation, creature paint and more.
This blog has some scans from the spore artbook which you can view.
This Portfolio has some interesting concept renders.
This Portfolio has even more concept renders. More can be found on his blogspot site here: http://mikekhouryportfolio.blogspot.com/2012/
Has a ton of screenshots the beta creature editor.
Has 12 pages dedicated to Spore.
From the lost 2D creature editor. -Image provided by Espurresso
Image provided by Cosmo Tewulf
Image provided by Cosmo Tewulf
Spore Galactic adventures concept cover art. Source: https://sporeinsider.wordpress.com/2009/02/12/galactic-adventures-cover-concept-found/
A section explaining the different planetary materials, and how they are structured to generate planet surfaces.