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

And it even has touch controls.
GamingOnLinux

Open-world zombie survival sandbox Unturned source code released

The popular open world zombie sandbox survival game Unturned just had the source code officially released. Unturned ...
Tom's Hardware on MSN

Pong game recompiles its own source code every frame

The IOCCC29 winner writes each frame as fresh C source, compiles it, then runs it.
VideoGamer

Fallout 1 and Fallout 2 source code isn’t actually lost, reveals former Interplay founder, despite orders to destroy all assets

Earlier this week, we released a story that the source code and in-development assets for both Fallout and Fallout 2 were lost. According to series creator Tim Cain, and as far as he knew, the source ...
Kotaku

Source Code

All the Latest Game Footage and Images from Source Code “Source Code” is a large-scale multiplayer online and LAN FPS/TPS game set in the backdrop of World War III. It features building and portal ...