The expansion content can be played before or during New Game +. The quests are designed for Geralt characters level 30 or higher. Each Runeword will impact a different aspect of in-game mechanics and will allow the players to experiment with various strategies and tactics'. It introduces a new gameplay mechanic called Runewords that ' significantly affects gameplay. Additionally, it expands the gameplay region northeast of Novigrad. The expansion features new characters, new powerful monsters, new weapons, a unique romance and new Gwent cards. Caught in a thick tangle of deceit, Geralt will need all his cunning and strength to solve the mystery and emerge unscathed.
Hearts of Stone will take Geralt on an all-new, 10-hour-plus adventure into the wilds of No Man's Land and the nooks and alleys of Oxenfurt, where he’ll try to complete a contract from the mysterious Man of Glass. A second add-on adventure, Blood and Wine, was released on May 31, 2016. Announced on April 7, 2015, it was released on Octofor all three platforms: Windows, PlayStation 4 and Xbox One. Hearts of Stone is the first add-on adventure for The Witcher 3: Wild Hunt.