In the crafting game Jacksmith, you make tools for soldiers and fight monsters with them on the battlefield.
After a day at the forge, your troops will use the weapons you made to fight against different monsters and enemies. While they are fighting, things will fall out for you to take. Most of the time, these items are gems and valuable metals that can be used to make things. The more loot you get from battle, the more you can use at your weapon creation spot to make better weapons.
Have fun and good luck!