Thanks for your efforts, Snow Crystal. Iron Century looks really impressive and it's strange to think this is largely just one dev's work! Not sure if it's planned for a dev diary or not, but I'd love to know more about how you got the ball rolling on Iron Century and how you got PDX behind you to get this done. I'm sure all the devs have little side projects here and there but not every day they make their way into the main game like this! Paradox sounds like a great place to work!
It's not really planned, but I can probably talk a little bit about it. Just before Christmas (I think it was the 22nd) I had been working a lot on Imperator and took a break from making some events on it to clear up some bugs from HF that I had accidentally made.
Randomly for fun while waiting for stuff to load I was reading about Otto I, and thought "What do the world even look like if I just slap in the random dare for fun?". After reading a bit more up on it, I thought 936 was a cool year that happened around a lot of other interesting stuff.
So I open the game in 936 at Otto's Coronation date (yeah, this really never changed), and just started checking stuff out. At first it was about 2000 errors across the world.
So I test it out a little bit and try fixing the history and clearing out the errors just in Norway and Iceland, and I manage to power through it pretty quickly. So after genuinely wondering how hard it'd be to actually make a bookmark, I clear up all my Imperator tasks in a couple of days over Christmas.
With the rest of my Christmas holidays free, I start doing a whole bunch of reading up on the 10th century and start putting together history and fill in things wherever I can. Originally I just planned to make a mod out of it.
After randomly talking to Tuscany (Dan) after we got back to work, we started talking about the bookmark. He suggested making it official, and the ball started rolling.
So I've poured several hundreds of hours of my spare time into it, and received a lot of help from friends and betas, both making parts of the history and testing it out. 5-6 months later and here we are.