A new kind of puzzle game!

Doctor Esker has vanished, leaving behind only a mysterious book full of puzzles written in his own hand. Nobody has cracked his cryptic codes yet. Are you up to the challenge?

The game provides a deck of 73 cards which contain nine devious puzzles to solve. You can play through the puzzles solo or together with family and friends. Great for a party, a game night, or a lazy afternoon.

The Sequels are here!

Son of Doctor Esker's Notebook, Return of Doctor Esker's Notebook, and Doctor Esker's Notebook IV: The Moroccan Affair are ready, with lots more puzzles to solve! Each game (original and sequels) is stand-alone, and you can play them in any order.