I'm pretty sure you mean this article: http://www.gamasutra.com/view/feature/3408/the_cabal_valves_design_process http://www.gamasutra.com/view/feature/3408/the

I'm pretty sure you mean this article: http://www.gamasutra.com/view/feature/3408/the_cabal_valves_design_process http://www.gamasutra.com/view/feature/3408/the_cabal_valves_... It's about the unusual design process Valve went through to produce the original Half-Life, and I too found it a fascinating read.