For those who don't know, Arkane Studios was working on Half-Life 2 Episode 4 between 2006 and 2007.
It was referenced as ''Return to Ravenholm'', and it was set in a Ravenholm infested with headcrabs and headcrabs zombies. The project was eventually canceled by Valve
Noclip is doing a documentary on the history of Arkane, and apparently they will go into discussions not only about released games but also about stuff that was cancelled like The Crossing, LMNO (that's where the screenshot in the previous tweet is from) and Half-Life 2 Episode 4
Last edited: