CCG writes – “Originally released in 2017 and 2019 as Faith Chapter I and Chapter II through itch.io, Faith is an entry into the survival horror genre created by Airdolf Games. Faith in 2022 is released as a trilogy known as The Unholy Trinity and is the only modern way to play this series (and by extension Faith Chapter III) as of writing this review as the separate itch.io versions of Faith I and Faith II are no longer available.”
Source: N4G PC Faith: The Unholy Trinity review – ChristCenteredGamer