I'd like to make a game that's a combination of text adventure and gamebook.

For instance, during the daytime (in-game) it would be a pretty regular island survival game, but at night it would be more story-driven, deciding what the next day's "text-adventure" portion would look like. Is this possible, or will I just need to wing it?

Thanks for taking a look!

You could simulate the function of the gamebook mode with scripting, but you can't have a quest file that's editable in both modes using the GUI or anything like that.