Lost Item

Lost Item places the player in a late-night office building with no explanation of why they are there. The only guidance is a sheet of paper pinned to a bulletin board, which instructs the player to patrol up to the 10th floor without error and to place every Lost Item they find into a collection box.

The core task is to follow those instructions exactly. If even one Lost Item is missed during the patrol, the player is returned to the 1st floor. Picking up some Lost Items can trigger events, and the game includes various paranormal phenomena.

The game contains 100 kinds of Lost Items, multiple endings and 16 Achievements. A single run takes roughly 15 to 60 minutes. The developer permits players to post gameplay videos, stream the game and record commentary playthroughs.