John Romero’s Head in DOOM II

In the final level of DOOM II, titled Icon of Sin, players face a giant demonic wall that spawns monsters. Hidden behind that wall is one of the most famous Easter eggs in gaming history the severed head of John Romero himself.

How It Happened

Romero explains that the boss needed a special invisible target to mark the spot players had to shoot to end the game. John Carmack programmed a simple placeholder sprite to handle this function. It was originally just a green square, hidden behind the wall so the player could never see it.

“No one was going to see it, it’s behind a wall you can’t see through, so it didn’t matter what it looked like.”

While Romero was busy programming the sound effects for the final level, two of the artists decided to play a small prank.

They replaced the invisible green square with a sprite of John Romero’s own head on a spike, placing it behind the demon wall so it could only be found by cheating or clipping through the level.

“They thought this would be funny. I’m the one you’re shooting to end the game. They did it secretly and planned to tell me later.”

The Discovery

Romero later tested the level while working on the sound effects. Instead of playing normally, he used a developer cheat to fly through walls and get directly to the boss area and there, he found his own head.

“I went through the walls to test the sound, and suddenly I saw my face. I instantly knew they thought they’d tell me later.”

The Hidden Voice

To return the joke, Romero decided to add his own secret message to the fight.

He recorded himself saying “To win the game, you must kill me, John Romero,” then reversed and pitched it down to sound demonic.

“I told the sound guy, let’s record my voice, pitch shift it really low, and reverse it so it sounds scary. It came out awesome.”

This reversed voice now plays when the player enters the final area of DOOM II.

The message is difficult to understand unless played backward, making it one of the most famous hidden messages in all of DOOM.

Legacy

The Easter egg became legendary among fans and cemented John Romero’s role as both designer and prankster within id Software.

It symbolizes the creative and rebellious energy that defined the studio during its early years.

Finding the head and hearing the reversed message remains one of the most iconic secrets in the DOOM series.