PSIO Prototype 1.1 Game Demo: Metal Gear Solid

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PSIO Prototype 1.1 Game Demo: Metal Gear Solid

Nix McRetro // 14th October 2013 // Gaming, Sony, YouTube

Metal Gear Solid, or MGS as all the kids know it.

Another masterpiece.

Everything I tested in this session behaved flawlessly on the PSIO 1.1 prototype.

That is an observation from the tested portion of the game rather than a claim that I exhaustively validated every possible part of Metal Gear Solid.

Prototype test conditions

PSIO hardware: 1.1
PSIO software: 1.1A
PlayStation: SCPH-5502
CD deck: removed

These results belong to the prototype revision shown here.

AI-assisted revision: This post was reviewed and edited with OpenAI GPT-5.6 Sol on 30 September 2026 for fact-checking, sourcing, and editorial cleanup. Final editorial responsibility remains with the author.