No More Room in Hell 2 resurrects a legendary Source mod as a hardcore co-op zombie FPS

If you didn't have a gaming PC in 2012 like me, there's a decent chance your first reaction to a zombie shooter called No More Room in Hell 2 is "Wait, there's a first one?" I'm just now learning the story of the original No More Room in Hell: That it was a co-op survival horror Source mod directly inspired by George Romero's films, supported eight players, eventually got a standalone release on Steam, and that it friggin' ruled. PC Gamer named it Best Mod of 2012, and the free game is still updated by volunteers over a decade later...