Here is the September developer log. This time I'm showing off the development of the mining interface over several versions. Even if the current interface version seems to be a logical way to approach the interface, lot of constraints and limitations often ensure, that you need lot of design attempts until you come up with a suitable solution.
The real challenge in designing the mining interface in Gnoblins was the dungeon building system. Most dungeon building games are grid based which makes dungeon expansion a lot easier than the room-based dungeon expansion approach used in Gnoblins.
But see yourself how the mining interface evolves from early versions to the current state: