A user has discovered a decades-old secret in the classic game Doom. The hidden cheat code reveals concealed game worlds by making walls transparent in the Saturn version of the game.

Even after decades, new secrets are still being uncovered in the famous first-person shooter Doom. An X user has now impressively demonstrated this by taking a closer look at the 1997 Sega Saturn version of the multi-million selling computer game.
The user, known as memory_fallen on X, discovered a previously unknown button combination: X, Right, B, Y, X, Right, B, and finally Y. To input this sequence, the game must first be paused.
Once successfully activated, the effect of the button combination becomes immediately visible: it makes the walls of buildings semi-transparent, allowing players to see beyond the intended boundaries of the game world.
According to available information, this works both on the Sega Saturn and with the numerous emulators available for PC. Whether the button combination can be used in other versions of Doom – for example, for the first generation PlayStation – is currently unknown.
No gameplay advantages
For players, the button sequence doesn’t seem to offer any advantages in gameplay. Despite the semi-transparent walls, buildings cannot be exited to avoid particularly stubborn enemies.
Rather, the button sequence is likely an internal function that developers used to test the performance limits of the gaming console, which was released in 1994.
This is at least what other users on X speculated as they congratulated the discoverer and tried out the find themselves. They noticed that despite the partially transparent walls and the additional visible graphics, there was no noticeable drop in performance.