game code

I understand that the overall chance for a dino floor after floor 6 is about 2.2% and they're predetermined at the start of the day, but does anyone know how this actually breaks down in the game code? I assume there's a set chance for a given floor number to be "set" as prehistoric, and then a...

I'm trying to figure out the best way to get a prizzie without going into skull cavern for a friend bc she HATES it. The wiki is super specific about the chances of a diamond node spawning in the Mines, but it only says that mystic stone chance is "increased by mining skill and daily luck". Does...