Diary of a Madman

In Diary of a Madman you walk around using a first-person perspective and you have to find individual diary pages. There are three sections (warehouse, container lot, mansion) and each one has some pages hidden.

The story is about a character whose best friend and wife have disappeared. The wife was already worried about her husband, so she asked the protagonist to follow her husband once. This is how the protagonist learned about the abandoned warehouse that his friend was visiting. When they both disappeared, he went back there.

The control is, typical for a 1st-person adventure, with mouse and WASD.