Two recent player building demos:
Camelot Unchained (aka "Dark Age of Camelot 2" by Mark Jacobs), 100% free form building - https://ello.co/jamesgoblin/post/lwcc9qkee_5xilkhpqhjma (First images are taken from the video below by Necromaniak, one of players in aplha tests).
Crowfall (aka "EVE Online meets Game of Thrones"), procedural world building - https://ello.co/jamesgoblin/post/e6yhwdv6_xbjtdqnff1tma
PS off-topic (non-building), Crowfall death mechanics in a short comic, possible sex/race change - http://imgur.com/a/jbuKL