Privateers & Pirates
A historical RPG set in the Golden Age of Piracy (late 17th century) or the Age of Sail (mid-18th to early 19th century). The PCs are pirates or privateers¸ crewing a vessel trying to get rich. It uses a simple percentile system of roll over difficulty¸ with binary traits. If you have a trait¸ then you may switch the tens and ones dice in the percentile roll. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim