Indiana Jones and the Great Circle: How To Find the Secret of Secrets Safe Code

The Vatican holds many mysteries, but few are as intriguing as the Secret of Secrets in Indiana Jones and the Great Circle.

A hidden safe in the Sistine Chapel needs to be unlocked. This article explains how to uncover the code and unlock the safe.

How To Find the Secret of Secrets Safe Code

The Secret of Secrets safe puzzle in Indiana Jones and the Great Circle is an ingeniously created challenge.

click to enlarge

+ 2

Credit: Machine Games

Players must figure out a combo by examining statues, observing planetary symbols, and following cryptic clues.

A blue safe sits on a wooden desk in the back room of the Sistine Chapel.

Nearby, there’s a note left by Father Nicoletti that provides the first critical hint.

The note hints that the code to unlock the safe is hidden in "the stars and the saints: Peter with the key, then Paul with the sword."

This clue hints that the statues of Saint Peter and Saint Paul are the key to solving the puzzle.

There are two wooden statues in the room, so take a good look at them:

Saint Peter Statue

The statue is in the corner of the room. Saint Peter, holding a key, can help you spot it.

Lift the statue and turn it over to inspect the bottom, where two matching astronomical symbols for Mars are located.

These symbols correspond to the number 4.

Saint Paul Statue

The statue of Saint Paul is on the desk near the safe. He is depicted holding a sword.

Rotate the base of this statue as well, and you’ll discover two additional astronomical symbols: Uranus and Mercury.

According to the planetary chart, these symbols mean 7 and 1.

click to enlarge

+ 2

Credit: Machine Games

To decipher the numbers associated with the symbols, look in the desk drawer in the same room for a planetary chart.

This chart matches astronomical symbols with the planets and gives each one a number. For example:

• Mercury (☿) is 1
• Mars (♂) is 4
• Uranus (⛢) is 7

The chart is essential for interpreting the numerical values but missing the Mars symbol.

You can determine its value by looking at the other symbols and their order in the solar system.

Using the note’s instruction to follow the sequence of “Peter with the key, then Paul with the sword,” combine the numbers associated with the symbols on both statues:

• The two Mars symbols on the Saint Peter statue align with 4 and 4.
• The Uranus and Mercury symbols on the Saint Paul statue stand for 7 and 1.

The complete code is 4471. Input the code 4471 into the safe to unlock it. Inside, expect to discover several items like:

• A forged copy of the Secretum Secretorum. Though it looks important, this book is of no real worth.
• A skill book called Cutman 1 that improves health regen when you use Adventure Points.
• Additional insights and rewards, including Adventure Points, will enhance Indy’s powers.

Solving this puzzle also gets you EXP to keep moving in the game. Have you unlocked any other hidden secrets in the game?