I have recently implemented the mushroom/mycelium interaction. I will not spoil its exact behaviour here. This mechanic was the last planned. And now that it is implemented, it has opened the door for all kinds of new puzzles. These appear in the many new levels.
The editor has of course existed for a long time. It is the way I have implemented the levels of the game. But now I have polished it and made it more usable. Now it is good enough to make it an official unofficial mode which enables the creation of mods for the game.
The road ahead
The game is nearing its completion. Only five more levels are planned. Additionally the game needs a fulfilling well-rounded ending. Then Blue Bug Bob will be ready for Prime Time. This is not that much anymore so I can happily announce the game will be released in September. And to strengthen the hype here is a little teaser trailer I made for Blue Bug Bob (using the excellent video editing capabilities of Blender):