: Features unique puzzles and a self-contained scenario that is different from the full game .

: Requires two players, each with their own copy of the Lite version.

: Consists of two full chapters with reversing roles, whereas the Lite version lacks Chapter 2 entirely.

: Includes a feature to replay from the opposite perspective with fresh puzzle solutions.

The of The Past Within is not free ; however, a free standalone demo called The Past Within Lite is available for download. The Past Within Lite (Free Version)