If you have spent any time in the high-stakes, mask-on world of Payday 2, you know that loud isn’t the only way home. Sometimes, the greatest heists are the ones where no one ever knew you were there. Enter the murky, stealth-driven world of the "Monkey Business" heist.
Arguably one of the most tension-filled missions in the game, "Monkey Business" requires precision, patience, and one critical piece of intel: the Monkey Business Safe Code. Fail to find it, and you are leaving millions on the floor. Find it, and you secure the legacy of the Payday Gang.
In this article, we will break down everything you need to know about the Monkey Business Safe Code—from spawn locations and hacking mechanics to stealth strategies and common pitfalls.
Hypothesis A: Monkey 1 is telling the truth.
Hypothesis B: Monkey 2 is telling the truth. Monkey Business Safe Code
Hypothesis C: Monkey 3 is telling the truth.
Hypothesis D: Monkey 4 is telling the truth.
Q: Does the Monkey Business Safe Code spawn on Normal difficulty?
Q: Can I brute force the code (0000 to 9999)? If you have spent any time in the
Q: What happens if I kill the person holding the code?
Q: Is the code the same for every player in the lobby?
Veteran players know a secret. Sometimes, the physical item containing the code does not spawn due to a known bug (or intentional RNG cruelty). In this scenario, you must use the Camera Room Computer.
Pro Tip: Always bring a loud drill as a backup. If you spend 10 minutes looking for the Monkey Business Safe Code and cannot find it, drilling is your only exit strategy. Hypothesis A: Monkey 1 is telling the truth
While variations exist, the standard formulation of the puzzle is as follows:
A safe is secured with a 4-digit code. There are four monkeys (often labeled 1, 2, 3, and 4) standing near the safe. Each monkey makes a statement regarding the code. The only known rule is: "Exactly one of these monkeys is telling the truth."
What is the correct code?
To solve the puzzle, we apply the ** Principle of Contradiction**. Since we know exactly one monkey is telling the truth, we can test each hypothesis: assume Monkey $N$ is the truth-teller and verify if the resulting code contradicts the other monkeys' statements (who must be lying).