Some small updates before i move on to bigger features:

It's now possible to show/hide layers while working in build-mode. 

The reason being, how difficult it was to work on objects which were set on the same position (F.e. a spike behind a foreground tile, elements on top of water..).

Now, you can hide the foreground layer - edit everything behind it and set it to visible again.

Another UI addition is, the possibility to copy a sprite on the screen. If you have drawn a lot of different objects, and already set them in the game-screen, you can hold "C" + click on an object to select it. That way, you don't have to find that specific object in the left section.

(Screenshot from: https://pixelpauer.itch.io/the-legend-of-fartacus)

Last update is, scrolling backgrounds. You can find them here:

With this option you can create moving background images. It looks great with clouds or something similar.