The Witcher Old World Skellinge ExpUtvidelse til The Witcher Old WorldThis is nice small addition to the main game, you will get some new lore, side activities and few miniatures. And still it's completely unnecessary, the rewards from the islands is nice, but usually don't worth the trouble and there's no more reasons to explore them, so the best scenario where it will be useful it's if you have big, 4-5 players party and you find main map overpopulated.