No. Upside-Down Dimensions has not stopped. 🙂 We have been slowly moving forward, not as fast as we would like, but steadly moving to our objective of making the game fully available on the main stores and platforms.
As to be able to reach that goal, we were forced to migrate from versions of the game engine that we were using, Unity 5, as it was generating us a couple of problems with some of the features of the game, and in some other cases were limitating some of the elements that we needed to include in the game as to make it as fun as we were tryng to achieve.
It has not been easy, as each major changes of unity versions is usually bringing some unexpected problems, but in this case, they seemed to be more controlled.