I logged in for the closing. It was pretty much just a bunch of people hanging around the Loop village in the snow zone emoting and using toys and such. Occasionally there was a global announcement from The Curator character. Then at like 4 my time, it just, went gray, "connection lost".
I spent a bit of time going to random people's houses during the build up. I forgot how amazing the housing system was. And how creative people would get with what seemed like a limited set of tools.
I kind of wish I had played it a bit more. I pretty much just got to the max of level 50 and stopped. I don't think I ever did any dungeons or anything.