If you have any questions for whatever reason, feel free to ask them below.
Does the black and white rule just apply to the gameplay itself or the title screen as well?
It's not a rule, but an optional theme. Yes, it would apply to the menu as well.
It's said in the rules that it must run on windows, but it can be played with browser?
Most Windows devices have browsers that can run web games, so if you don’t want to or are unable to put your game into a portable file, at least having it playable through the browser is fine.
