The Darkest Hour (2011) presents a unique alien invasion premise where extraterrestrial beings arrive on Earth as invisible energy-based entities, attacking humanity through the global power supply. Directed by Chris Gorak, this Russian-American co-production follows five young tourists in Moscow who find themselves among the few survivors after the initial attack. As they navigate the deserted streets of the Russian capital, they must use their wits and scavenged technology to fight back against an enemy they can barely perceive.

The film's strongest element is its inventive visual concept of invisible aliens revealed only through electrical interference and special goggles. While the characters follow familiar survival horror archetypes, the Moscow setting provides a fresh backdrop rarely seen in Hollywood alien invasion stories. The production design effectively creates an eerie, abandoned cityscape that heightens the tension as the small group moves through iconic locations like Red Square and the Moscow Metro.

Despite its modest IMDb rating of 4.9, The Darkest Hour offers solid entertainment value for fans of sci-fi horror looking for something different from typical invasion narratives. The 89-minute runtime keeps the pacing tight, and the film delivers satisfying action sequences as the survivors learn to weaponize electricity against their otherworldly foes. For viewers seeking an atmospheric thriller with creative alien design and an international setting, this film provides an engaging watch that explores humanity's resilience when faced with an unimaginable threat.