[PC, MAC] Free: SOMA & Costume Quest @ Epic Games

SOMA

SOMA is a sci-fi horror game from Frictional Games, the creators of
Amnesia: The Dark Descent. It is an unsettling story about identity,
consciousness, and what it means to be human.

Overwhelmingly Positive (15,589 reviews) Steam Link

Costume Quest

Costume Quest is a Halloween adventure from Tim Schafer's Double Fine
Productions. In this charming role-playing game, choose your hero and
trick-or-treat through three beautiful environments full of
Double Fine humor and story.

Very Positive (1,761 reviews) Steam Link