It's not ULTRA FUN, but I think it's a neat little toy. I'm tempted to make a game where you play as an elevator, like diner dash except with getting people to the correct floor instead of delivering food to the right table.
Could make for an interesting secret project!
Anyways, you need the Shiva3D web player pluging whatever thing to play it, and I don't blame you if you don't want to install it, but hey why don't you live a little, okay?