Angelus: Akuma no Fukuin

Two horrifying incidents that happened in two unrelated places. A man in Peru, one of the constructors of a new dam. An American female exchange student in Japan. Both were suddenly struck by a horrible disease that deformed their faces... Two young special agents, Alice and Brian, are sent to investigate the mystery, that will lead them into a dark world of occult and demonic forces...

Akuma no Fukuin (Japanese for Devil's Gospel) is a Japanese-style adventure game. The player chooses menu commands ("Look", "Talk", etc.) that are displayed under a still picture that represents the location. Most of these command have their own context-dependent sub-menus, i.e. it is possible (and sometimes necessary) to look at different things and talk about different topics. There are no puzzles, and the story usually advances when the player has triggered a necessary conversation or event.