Sisters

Sisters is a short horror experience from the studio Otherworld Interactive that was among the first to show that genuine fear could be evoked even on Cardboard, despite hardware without motion tracking. The player finds themselves in the role of a child in a dark house, gradually discovering traces of two sisters and an unpleasant presence that inhabits the house, with the whole experience built on the slow buildup of tension rather than action, violence, or being chased.

The game uses gaze-based navigation and relies primarily on sound design and lighting work, since the phone's limited computing power did not allow for complex effects or detailed character models. Jump scares are dosed sparingly, which gives them greater impact, and the short runtime, usually just a few minutes, places the game among the so-called VR vignettes – experiences designed to take only a moment but linger in the player long after taking off the headset.

Sisters was often cited as proof that a limited mobile VR platform need not be an obstacle for a genre built on atmosphere and psychological pressure rather than graphical fidelity or complex animation. In the context of Cardboard, it was one of the titles that deliberately exploited the player's isolation inside the headset, the feeling that they can see nothing outside and are left with only what the game itself shows and what they hear in the headphones. Even years later, it remains an example of how effectively an unpleasant, claustrophobic sense of threat could be evoked with minimal resources and without a single controller. Its short playtime in particular proved to be an advantage, since horror in a headset is a physically and psychologically exhausting experience, and many players replayed Sisters repeatedly to show it to friends and watch their reactions, turning it into one of the informal social rituals associated with the first cardboard headsets.

Why play it: For horror fans, for whom isolation inside a headset and a dark atmosphere are enough for tension instead of graphical fidelity – the short playtime here is more an advantage than a flaw.