My ears, my poor poor ears! I think I found a bug. On completion of the game the train horn seems to loop and it's really REALLY LOUD!. Which was quite the surprise for me because moments before my eardrums exploded I was vibing to your game. I really like it! The use of the hammer to adjust pieces is really smart. Maybe consider adding a cross piece so the player can travel across rails and really create a giant mass of rails. Probably one of the games I spend the most time on, great job!