Sleeping Gods
How do I add Tides of Ruin to the base game, and does it add rules?
There is no separate manual: add all components except the Arcade Mode cards (keep those as their own deck). Shuffle the market and event cards into the base decks and add enemy, quest and adventure cards in number order. It adds stories, maps and side quests but no new rules, and can be added from the start or mid-campaign; leaving it out can leave you at map pages that need it.