Is there something like Prototopia but with video game sourcecodes?
I think Doom has the code out. 99% of devs keep their work internal though. The closest you'll get to viewing proprietary code is an SDK like Unreal Engine.
bump for interest
>>53751778
the source code of Return to Castle Wolfenstein has been made public
>>53751778
>>53752214
>>53752323
https://github.com/id-Software
This should help you
https://en.wikipedia.org/wiki/List_of_commercial_video_games_with_available_source_code