I know someone who was making $65k one year ago, and is now making six figures. They're a talented and capable dev, but so are many of you. And this was the midwest.
My own salary bumped from $35k to $75k during my early career after getting a job at a different gamedev studio. Before that, I was paid $20k for around three years, then $35k for a year.
($20k was good money in the midwest, especially when you're young and have no bills. It all went straight into the bank. I'm wistful for those times...)
You are almost certainly underestimating your market value. The only way to determine your market value is to go out onto the market. Go search! Best case, you find a better job. Worst case, you stay at yours. Middle case, you can use a job offer to leverage a raise.