The base mod focuses on a medieval MMO experience with kingdoms, guilds, an economy, merchants, NPC settlements, quests, territories, skills, bazaars, a custom interface, and persistent player progression. This expansion adds a new world generation system based on floating islands known as the Isles of the Veil. These islands are meant to feel mysterious, ancient, and dangerous, suspended above the world by forgotten magic. Each island set includes new medieval fantasy biomes, rare resources, ruins, villages, and dungeons. It contains new biomes such as fog-shrouded mountain islands, floating enchanted forests, ruined castle fragments, crystal cliffs, sky farming villages, ancient monasteries, and areas corrupted by the Veil. Also added are medieval-style NPCs such as sky traders, knights errant, monks, island guards, guild envoys, lost villagers, blacksmiths, alchemists, bandits, and cursed creatures. The expansion includes the existing systems from Thrones and Merchants: economy, kingdoms, guilds, NPC trading, quests, territory control, skill progression, and persistent data. Players should be able to explore, claim, trade, defend, upgrade, and build relationships with settlements located on the floating islands. The visual style is immersive medieval fantasy, featuring stone bridges, wooden docks, banners, lanterns, markets, towers, farms, castles, ruins, and magical effects related to the Veil.