You may be looking for HOME, a 2013 Fan Sequel to OFF, by Felix The Judge.
The game takes place from a sideways two-dimensional perspective and has the player examining objects in the environment and using some of them to progress. However, it is not a traditional adventure game in the Sierra Entertainment or LucasArts model, as the emphasis is much more on exploration and atmosphere rather than object puzzles. The game also features Story Branching elements in that the game is told as a flashback by the main character, and at many points in the game, the player is asked what happened next or whether or not something is part of the main character's history (and allowed to choose from one of two options).
In terms of presentation, it strongly resembles Lone Survivor, except it's a pure horror game without any survival mechanics or combat, nor any explicitly supernatural content.
You can look up theories on the plot of the game here, but beware of spoilers.
Tropes appearing in Home include:
- Amnesiac Hero: The game starts out with the protagonist having no memory of what happened.
- Driven to Suicide: You can choose to commit suicide in the end if you picked up the gun or the knife.
- Downer Ending: Some endings are darker than others.
- Entitled to Have You: If you don't find Rachel under the rags in the basement, the situation could be this. While there are pictures of the MC and Rachel together implying at least some kind of former relationship, the fact that you can find more of her stuff on Norman's house than your own could be interpreted that Rachel is Norman's wife and that the main character is so obsessed with her that he believes he is married to her, especially if she left him for Norman.
- Jekyll & Hyde: Possibly, for the player character. It is possible to not find Rachel in the rags and come to the conclusion that the player killed all those people.
- Left Hanging: The game never conclusively explains exactly what happened, leaving it up to the player to find their own interpretation of the game's events.
- Multiple Endings: Depending on the player's responses throughout the game when prompted to what events happened. While some endings are darker than others, there does not appear to be any sort of Golden Ending, and none of the endings conclusively explain exactly what happened. Some do imply more than others, however. Several imply you're the murderer in a revenge-driven plot gone awry, others imply you're an unwitting bystander.
- A common run-through results in the story being about the player murdering his wife Rachel, his friend Norman, and several unlucky bystanders as a result of Rachel cheating on him with Norman.
- Retraux: It's a 2-dimensional game using pixel graphics that would fit nicely in The 16-bit Era of Console Video Games.
- Serial Killer: There is strong evidence that one is or was active. His identity is never made clear.
- Stalker with a Crush: One interpretation of the story. The Player Character fell in love with his co-worker's wife, and started sending unnamed threats to him. His obsession with her combined with his amnesia left him to believe he was married to her.