On some emulators it is impossible to force dmg mode but some people might want to play dmg mode either for nostalgic reasons or to do something like apply a custom palette. That's why we included it but you are right that the regular rom is dmg compatible too. The cartridge has the gbc rom loaded onto it.
Viewing post in UNEARTHED full version is OUT NOW! comments
Thanks for that, and for marketing it with LRG as a GBC game. For DMG stuff I do like to use the palettes due to color blindness. I had an issue when they released Melon Journey as a DMG game, as it actually has a GBC palette that forces DMG-like colors on it, preventing me from using an alternate palette on my actual GBC. In most cases a proper GBC palette I'll be fine with as well, just not when it is all greens haha.