You've been summoned to Castle Slogar to celebrate Melissa's 9th birthday … again! But the party has gone awfully awry.

Guests are scattered throughout the labyrinthine castle, and Lord Slogar is missing! It's up to you to lend a hand, or a foot, or whatever you can spare to save the party and rescue Lord Slogar.

Unhappy Birthday at Castle Slogar is a sorrowful solo gamebook filled with interactive puzzles. This B&W 64-page softcover journal includes a full map of the castle that shows which rooms you've explored. The book's sections describe each room, where you'll face a horrible hindrance or a character whose dismal dilemma you'll solve to access the next room.

Having trouble? A special website provides hints and extra material. Unravel the riddles then use your answers to find the gloriously gloomy finale!

- A new immersive way to experience the world of Gloom

- Integrated hint and solution website so you never get stuck

- Features the beloved Gloom aesthetic by the original artist J. Scott Reeves