From the video description:

Alien Resurrection on the Sony PlayStation PS1 has a secret cheat code that has never been discovered - until now. It enables you to play backup discs without any additional mod chip or soft mod. It doesn't even need a memory card. Let's take a closer look at what it does and how it works!

Lmao, Dude programmed it in, didn't disclose to Sony (Obviously), his company or even his fellow devs, absolute legend lmfao

Holy crap that's amazing. Can't believe Martin was able to keep this a secret and not spill the beans for 23 years.

This channel is pure solid gold. Love every video he releases.

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