Official version
The official FoliesApp game is sold through Steam: https://store.steampowered.com/app/5053820/Mimic_Party/ The supplied Steam capture includes a purchase offer, so it should not be described as a free official download.
Same-name browser sites are different
The supplied research includes a browser site that calls itself free to play, but its FAQ states that it is independent and not affiliated with FoliesAPP, Valve, or the Steam game. It is not an official free version of Mimic Party.
Download safely
Use the official Steam page for purchase and installation. Avoid presenting third-party downloads or unrelated browser pages as the FoliesApp release.