Here's that noir thriller built in the original Half-Life engine you asked for

There's been a surprisingly strong run of Half-Life total conversions of late, by which I mean there have been two of them. November brought us Diffusion, a massively ambitious sci-fi adventure with some truly eye-popping environment design, especially considering the age of its tech. Yes, it featured some terrible AI generated text-to-speech. But its creator is working on fixing that and recently revealed some of the human cast for its English dub... Read more.