I still like this , if you have the torches and lighting
as part of a core concept ,you could really create
that mysterious eerie exploration elements for your
game , a part of the mechanics could be having
to use torches to light up and explore the world ,if
you added a sort of progression through the game
then later on the player could start throwing light
sticks in dark areas etc .

crackling sound of fire and crickets and wild animal
sounds plus some scary monster sounds in a darkish
nightime game , exploring underground caverns ..