Did you get inspiration from link's awakening ?
Yeah! Mainly the overworld and sense of place. It'll be more apparent when the world is larger, I think, but it's one of my all-time favourites. Not a direct inspiration necessarily, but definitely one of the leading influences.
I was wondering, the bits/gems you can get while exploring, what do they do ?
Currently in the demo there's only one hidden use for spending 200 of them, which is grants a reward that also has no value. In the future, bits will be a general currency for hints, minigames, and some misc interactions.