The Workshop world of Steampunk Idle Spinner now works as intended, please, you can check it on the video and the list of the machines in Wikia.

The next world, reachable from the Portal, will be the Clockwork City world. It will be unlocked in the next game update. Moving to the next world costs 1000000 narrativium (or more, because opening a new world for the first time takes all the player's narrativium). But, as the players asked, it will be possible to return to the Workshop world after you leave it for the Clockwork City.