I couldn't quite work out why they were called "fake" tiles. It seems to be a collection of disparate tile designs - some river, some forest, some roundabouts - for different people that never made it as formal downloads, or with rules, from 2008 or before. Some of the tiles may have appeared in other expansions at a later date.
The links in the first post on the thread, meepledrone mentions, still work. Images are also present in another, connected, forum post.