Spikeball

How is forging 4 tools off of one piece of charcoal "devouring"? It consuming so little charcoal is what got me thinking about this in the first place!

In real forging reheating the work piece multiple times is part of the process. To get this effect work pieces need to cool down faster. The reason they cool down so fast in real forging is the anvil is absorbing the heat due to it's high contact area with the workpiece and thermal conductivity from being metal. So I recommend only speeding up the cooling for work pieces on the anvil, not in inventory, ground, or cool forge. Especially the copper anvil and copper work pieces, copper has about ten times the thermal conductivity of bronze, iron, and steel. (this also means copper should heat up faster then the other metals) It is amazing what a little bit of tin does to copper's physical properties...

The game already has rooms as a mechanically identified thing. Is there any reason just having monsters not spawn in rooms so your house/base/castle is your safe haven? That seems to be the simplest way to solve the monsters spawn in player builds issue. Do any of the dungeons/ruins count rooms? I suspect not because of the ruined doors not counting as sealing the space.

The "Thatch roof top" and "Thatch roof bottom" blocks and don't have corresponding corner blocks. This makes using them awkward. Same design principles and crafting recipes would be easy to apply to the corners for 4 more thatch roofing blocks.