I know that Gameboys didn't have lighting for the games run on it, but there wasn't any rules specifically about whether or not you can use lights in your games. So, are you allowed to use them? (and don't worry, I'm still following the four color palette rule, lighting would be the fanciest part of the game)
i don't know what you mean by fancy lighting, but it sounds like it would create more than 4 colors in your game, so probably no. for example, different shades of a color count as more than one color. here's an example of what the original gameboy palette looked like if you aren't sure: https://lospec.com/palette-list/nintendo-gameboy-bgb
To give some examples from past jams of theme/restriction appropriate dynamic lighting effects:
https://nastyoldwizard.itch.io/monster-manor
https://kadinsgaminglounge.itch.io/deep-dive-rescue
Are a couple that I found. Folks came up with some really cool stuff in past jams.
