Many games that I've watched and played in have allowed druids to craft or have crafted equivalent armours of different types, made from natural materials - using the armour plates of a creature the party killed to create a functional breastplate, or similar things. Some races (lizardfolk) have a natural crafting trait that, while limited, can be extrapolated by a thoughtful DM to allow a druid to advance the non-magical armour track a little further. A video game allowing crafting of mundane armours out of natural resources, could, in the right circumstance and if it's done carefully, actually work really well.

While the sage advice is worth listening to, in tabletop play, I do feel that in a video game situation that's a level of DM-to-Player flexibility that it simply can't handle, save in very specifically designed circumstances, so, for practicality, druids should simply be debarred from equipping metal-wrought armours and shields, at a base mechanical level.