Nice game. Collecting resources and crafting system was fun. The main goal was missing, but given the crafting and mention of the score the natural push is towards crafting an automaton. (Which I managed after a few tries, getting a score of 216.) Coal is a very constrained resource, as it's also used for moving. There was very little margin for error in optimizing movement and saving coal so that you can build an automaton. You can consider having smaller objects to craft that give the player some advantage immediately (higher speed, lower coal consumption, etc.). Right now the game loop is collect all resources, get to the nearest forge, and then craft. You could also show all resources and items in the top bar. basically flatten out the inventory grid into one row and put it there. Right now it's only distance covered and coal, and I'm not sure why the total distance matters. Overall this is great for a jam, and the core game system is good. With some tweaks this will be more fun to play. All the best!