Hex tiles have 6 directions: west, east, north-west, south-west, north-east, south-east. Like in original Fallout and Heroes of Might and Magic. In some cases games use north and south hexes instead of east and west, but that is a bad design decision, because you cant flip north and south sprites, and west to east movement direction is more common than north to south (i.e. beat em up games).