I have an update. There's good news and bad news.
First, the bad. There was a mistake in my coding toward the end of the game. Long story short, it was impossible to get to the last boss the legitimate "beat all the bosses" way. (I tested more the "non-legitimate" way to beating the game. Yes, there's a secret to getting to the last boss very quickly.) The good of the bad news is that it was only accessing the last boss which was flawed. Everything else was fine.
The good news is, I fixed the problem completely. All the files/links/online-game on thefieldofkings.com website are fixed and updated. None of the file sizes changed because it was a simple line of coding that got overlooked. Its all good now.
The bad of the good news is there's no patch so to speak. It requires a re-download, and re-install. My sincere apologies for the inconvenience.
Some more good news, I've had multiple people ask me... how long does it take to beat the game? Well, I decided to find out... and document it.
Here's a video of a The Field of Kings speedrun so to speak. How long it takes from the start of the game, to unlock the seal to The Ineffable King Edward (last boss). Surprisingly, it was just a little over 12 minutes. I'm guessing with beating the boss, assuming you knew exactly what you were doing (much like in this video) it would barely be more than 13-14 minutes to completely beat the game. Be wary of spoilers. This video reveals boss locations and quite a few enemy weak spots.
https://www.youtube.com/watch?v=KlpJ4m5edw8