Error: Human Not Found

Error: Human Not Found is a science-fiction visual novel and puzzle game. You play as Grace Fortran, a computer scientist aboard the Noah Sphere, a space research station. After the first Artificial Intelligence (AI) is uploaded to a physical android, the AI is found dead less than 24 hours later, and Grace must clear her name.

Investigate the murder

You work with Ada, another AI, to search for clues, question suspects and solve four kinds of computer-science-related puzzles. Your investigation leads to one of three endings, each determining the fate of AIs and their relationship with humanity.

Research databases

You can unlock databases containing background information about real-life computer scientists, mathematicians and roboticists who share their names with characters in the game.