Forgeur Games has announced Mystical II: Forgotten Knowledge, a medieval puzzle game for Windows, set to release on Steam on December 3, 2026, at 19:00 CET (10:00 PST) for €4.99 / $4.99, with a 20% discount during its first week. The Steam page is currently available for wishlists. Players will buy, match, and reveal objects to progress through the game, with the goal of recovering forgotten knowledge in five mystical realms. The game features 50 stages, each with its own unique challenges and puzzles to solve. The game's illustrations were created with the help of generative AI tools, while its texts were written with the aid of AI. However, the game design, rules, and stages were created by the developer, Forgeur Games, a one-person studio making small games for Steam.