While some sites list it as "free-play," it is important to distinguish between the versions:
Rusty Lake. 4.8star. 47.4K reviews. Teen. $2.99 $1.99 Buy. play_arrowTrailer. Free with a Play Pass subscription Learn more. Teen. Google Play·Rusty Lake Save 66% on The Past Within on Steam The Past Within Free Download (Incl. Multiplayer)
This is a free demo version offered by the developer. It provides roughly 15–30 minutes of gameplay with content distinct from the main game, allowing players to test the co-op mechanics before buying. Unique Multiplayer Mechanics While some sites list it as "free-play," it
Unlike traditional online games, The Past Within does or shared servers to play. The Past Within - Apps on Google Play The Past Within Free Download (Incl. Multiplayer)