Hi, I'm a programmer and physicist from Russia. You do a good job, I want to help you as I can. I found that lava cools down too quickly, so it can't flow down the mountain. I found that plasma has no reaction on electomagnetic field. Uran and plutonium don't slpit in common conditions, so they don't have a crytical mass. Nuclear explosion should generate plasma ball of high temp. and press., but also it should instantly heat all around because of strong light emission. There's no need in specific wave generated, spreading plasma will do all job. When C4 explodes underwater, flames instantly appear on the surface, but they shouldn't at all. Air shouldn't be everywhere, fire must burn it. And fire shouldn't burn when pressure is not enough or O2 concentration is small (it could be another param for the air) or when all pixels around are busy with other materials than air or O2. etc., etc.
For the other things, TPT bypasses these laws to make the game easier for people who aren't scientists (some people might not know you need O2 to have fire).