6F: NIGHT SCHOOL LOOP∞

6F: NIGHT SCHOOL LOOP∞ is a short first-person horror game built around a looping corridor. It takes place in an empty Japanese school at night, with the setting modelled on junior high schools of the 1990s. The player starts on the sixth floor and must make their way downwards to leave the building.

The core mechanic is observation. On each pass, the player walks the corridor from one end to the other under the fluorescent lights and compares it with what they saw previously. If nothing has changed, the correct choice is to take the stairs down. If an anomaly is present, the player should go up instead. A wrong decision returns the player to the sixth floor. Anomalies range from subtle to overt, including open classroom doors, a tilted light fitting, a soaked randoseru school bag, and a child standing in a classroom that should be empty. The same anomaly can appear different depending on which direction the player approaches it from, so the corridor is intended to be checked from both ends.

The game is described as a complete experience with an ending. It offers Japanese and English interface options and is available for Windows and macOS.