The Calculator (original title Vychislitel) is a 2014 Russian science fiction thriller that delivers a tense survival narrative set on the hostile planet XT-59. The film follows ten prisoners who are exiled to this dangerous world with one mission: traverse treacherous swamps to reach the fabled Islands of Happiness, the only safe zone on the planet. Along their perilous journey, they must contend not only with the planet's harsh climate but also with mysterious underground horrors that threaten to eliminate them before they can complete their task.

Directed with a focus on atmospheric tension, The Calculator creates a claustrophobic sense of danger through its swampy alien landscapes and unseen threats. While the film's IMDb rating of 4.4 suggests it may not reach the heights of big-budget sci-fi productions, it offers genre enthusiasts an interesting example of Russian science fiction cinema with its unique premise and survival horror elements. The performances effectively convey the desperation of condemned individuals fighting for survival against both environmental and supernatural threats.

Viewers should watch The Calculator for its intriguing premise that combines prison drama with alien planet survival horror. The film's 82-minute runtime ensures a brisk pace without unnecessary padding, and its practical effects and production design create a distinctive visual style. For fans of international sci-fi looking beyond Hollywood blockbusters, this Russian thriller offers an interesting exploration of human endurance in extreme circumstances, with the ever-present threat of the planet's mysterious underground horrors maintaining suspense throughout the journey to the Islands of Happiness.