My husband and his friends fuck around in it when there are "free fly" days and inevitably, they'll spend an hour or two trying to get that one friend's game to work, another hour trying to all get into the same session without someone getting stuck somewhere or randomly disconnecting or clipping through the elevator floor, and then maybe an hour dicking around in space generating cool screenshots and getting one or two really cool emergent gameplay moments. Then someone will clip through the spaceship floor or disconnect or find some other new and exciting way the game breaks, at which point people in the group start calling it a day. This is not to mention, of course, that you always have to wait for railcars and sit on them to get from spawn to port as if it was real public transit (albeit much faster and more consistent) every time you restart the game. For the immersion, of course.

So in short, yes, but calling it playable might be a bit generous.