Grigori was testing the cure's prototypes on animals and on himself. Father Grigori was making some experiments with Headcrab's toxins in hopes to find immunization from them and we were to assist him in this The main part of the game was to be insite an abandoned asylum, most likely somewhere not far from Ravenholm, and near the end of it in the town itself. Shephard from Opposing Force (it seems G-Man gave him a nice promotion, from corporal all the way ti leutenant ) Inside their team this project was called just 'Ravenholm' They had a build of Episode Four's previous iteration from JPS but from the looks of it they decided not to use their ideas. A playable build still exists inside Arkane studio Here's a short list with some of the facts from this video: As we predicted there was plenty of new information, screenshots, concept-art and video footages from the cancelled Half-Life 2 episode Return to Ravenholm. Today a new documentary about Arkane Studios was released on Noclip channel. For more information you could visit a discussion thread on our forums. Before this day we only had some pieces of informations, few screenshots and model renders from Arkane's project.
At first it was Warren Spector's Junction Point Studios, and then since 2006 - Arkane. Back in 2005-2007, when Valve still had episodic system in mind the development of one of Half-Life 2 episodes was given to outsource company.