The Calculator (original title Vychislitel) is a 2014 Russian sci-fi action thriller that delivers a tense survival story set on a hostile alien world. The film follows ten prisoners exiled to planet XT-59, where they must navigate treacherous swamps to reach the only safe zone—the Islands of Happiness—before the planet's deadly climate or mysterious underground creatures eliminate them. This premise creates a compelling race against time filled with environmental hazards and psychological tension.

Directed by Dmitry Grachev, The Calculator combines elements of prison drama with science fiction horror, creating an atmospheric experience despite its modest budget. The film's strongest aspect is its oppressive setting—the swampy landscapes and constant threat from unseen dangers create genuine suspense. While the visual effects reflect the production constraints, the practical sets and creature designs effectively establish the hostile environment.

Performances from the ensemble cast adequately convey the desperation and conflict among the prisoners as they face impossible choices. The Calculator explores themes of redemption, survival instincts, and human nature under extreme duress. For viewers interested in international sci-fi or survival thrillers, this Russian production offers a distinctive take on the genre with its bleak atmosphere and relentless pacing.

Despite its mixed critical reception, The Calculator provides solid entertainment for fans of B-movie sci-fi looking for something different from mainstream Hollywood offerings. The film's straightforward survival narrative and tense sequences make it worth watching for those who appreciate genre films from international cinema.