by Jane Jensen for the video game Gabriel Knight 3. Jensen identified it as the most challenging puzzle she ever designed, discussing how she used a "real-life" solution to the "Rennes-le-Chateau mystery". She modified the real poem of the same name and changed a fair amount of the poem to make it a solvable puzzle. The idea of the circle, square, and grid used in the puzzle was inspired by books written by author David Wood, and the location of the final treasure was inspired by the book "The Tomb of God". She notes that most of the puzzle's elements she had to come up with herself. She also called it her favorite puzzle of all time, and part of the reason she is fond of Gabriel Knight 3. She built the puzzle around the game's fully controllable 3D camera, which was a new feature to the series, with the intention of utilizing the camera to its fullest extent. She discussed how it was fun to design puzzles that required three dimensions. Jensen discussed doing puzzles similar to Le Serpent Rouge for a series of adventure games under the label Gray Matter, but split up into "smaller chunk". Reception The Le Serpent Rouge puzzle has received generally positive reception, identified as both a "renowned" and "revered" puzzle by Incubator Games CEO Radek Koncewicz and writer Jack Allin, respectively. It is regarded by adventure game fans as one of the greatest puzzles ever created. In their review of Gabriel Knight 3, Adventure Gamers writer Dan Ravipinto identified the puzzle as one of the best aspects of the game. Just Adventure staff regarded the puzzle as one of his "all-time favorites". Adventure Gamers staff praised the puzzle as being "perhaps the best over-arching puzzles ever" in an adventure game. Writer Evans Dickens found one series of puzzles in the video game The Uncertainty Machine to be inspired by the Le Serpent Rouge puzzle. Writer Johann Walter compared the video game Destination: Treasure Island to the puzzle, stating that people who enjoyed the puzzle may be happy with the game. The Games Machine staff stated that while it was long and demanding, players would be left satisfied once they completed the puzzle. Computer Gaming World staff felt that people more invested in the mystery will appreciate the puzzle, though felt it would still be intriguing for those who are not as much. Hardcore