Afraid of Monsters

Afraid of Monsters is a single-player modification of Half-Life released in 2005, infamous for its depressing and grungy overtones and Silent Hill-esque feel.

In 2007, it was completely remastered, complete with new weapons, textures, models, maps, and endings. The original 2005 version of AoM was ported to Sven Co-op, a multiplayer Half-Life mod, in 2008. Two years later, the porter, Cocyx, ported AoM:DC as well.