This looks promising! Not multiplayer, but very open ended.
Here’s some more interesting LU promotional artifacts. These were on display at E3 in 2010, going by the flickr set, and the photographer was schooled by commenters by the looks into revising his descriptions. I have no idea the fate of these ~beautiful~ objects d’art and have a hunch that Steve might have seen them in person? Images link to biggified versions.