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