It seems like engineers are vibe coding game ports with access to the source code

And it even has touch controls.
Hosted on MSN

Konami sues to find source who leaked Metal Gear Solid 2

A few months ago, a source code for versions of Metal Gear Solid 2: Sons of Liberty was leaked online, containing “non-public videogame assets from MGS 2 and internal MSG 2 development materials.” And ...
Kotaku

Konami Is Suing To Unmask Whoever’s Responsible For The Major Metal Gear Solid 2 Source Code Leak

Earlier this year, source code for Metal Gear Solid 2: Sons of Liberty was leaked over 20 years after the game’s release. Months later, we still have no idea who’s responsible. Now, Metal Gear ...