Welcome to Simple World Builder! This 'game' (it's more like a tool) is about making a world and sharing it to other Scratchers. Controls are explained in depth in the instructions tab, but I'll go over them here: Number Keys to select tile. Space to change size of brush. 'A' to generate a code. 'B' to scan the code in.
Thanks to ScratchinJoJo for allowing me to use their song, Mountains: https://scratch.mit.edu/projects/101609664/ Thanks to my brother for testing it!