Been asked this a few times, so thought I should post it somewhere. Originally this game was called Ironery, but everyone failed to pronounce that. After lots of brainstorming and a quick player survey, I decided on Ironfell, it’s short, easy to say, and the domain name was available.
Iron is the most important resource, this’ll become more obvious when we get into space and asteroid mining.
Fell is to cut down a tree, something you do often in the early game. And “sorcerers use spells to achieve their fell ends” or a animal hide, or a hill. Almost all the meanings of Fell are relevant :)