Demo has been completed and put up for release.
Able to play a special "The Demo" level, as well as 2 selectable characters (second one can be unlocked in the level).
Includes procedural level generator locked at Challenge 10, as well as the world editor (only 2 available tilesets: "demo" and "earth").
Includes the free SBEU Steam Workshop Uploader tool, so any levels you make can be put on the Steam Workshop! However, full game is required to play levels from the Steam Workshop (that's how I getcha to buy the full game!)
The demo is suggested to to try-before-you-buy, to make sure the game can run on your system, and see if it is something you may enjoy. It's free, so please give it a try!
Any problems, post on the forums and I will help you out.