Originally Posted by Himmel und Erde
Missing concept art #21 and #23, any idea where those are? A concept art guide would be nice.
21 is in mechanical zone in the section that has the piping maze (where you use your tractor beam tool to "unplug" the pipes so you can fit in them) the concept art is hidden inside one of those pipes where the plug is facing horizontal, not vertical. Forget where #23 is sorry.