Sword of Convallaria will feature a crossover event with characters from The Witcher 3: Wild Hunt, starting on November 28. The event will introduce at least four iconic characters, including Geralt, Yennefer, Triss, and Ciri, with Ciri expected to be available for free. The game is a grid-based strategy title reminiscent of Final Fantasy Tactics, and players can access it without upfront costs. Each character has unique abilities, and the crossover does not have a predetermined end date. The game has received mixed reviews, with some praising its gameplay and narrative, while others criticize its gacha mechanics.