Following its wildly successful run at the Cannes Film Festival, Colony arrives with significant expectations attached to its name. Directed and written by Yeon Sang-ho, the director behind the zombie classic Train to Busan, Colony sets out to do something increasingly rare within horror cinema: reinvent the zombie genre in a way that feels genuinely fresh.
I had the opportunity to see Colony as part of the 2026 Sydney Film Festival, and the anticipation surrounding the film was evident the moment I stepped into the cinema. This screening was completely sold out, with audience members spanning all demographics, eager to see the latest work from one of South Korea’s most acclaimed genre filmmakers. Given both Yeon’s reputation and the very positive reception the film received at Cannes, expectations were understandably high. Fortunately, Colony largely delivers.
The zombie horror genre is notoriously difficult to innovate within. Decades of films, television series, games, and novels have explored virtually every conceivable variation of the undead apocalypse. Many stories also rely heavily on scientific explanations rooted in virology or infection, making it easy for familiar tropes to feel repetitive.
Yet, Colony manages to carve out a unique identity for itself through a fascinating central concept and an evolving threat that constantly keeps viewers guessing.
The film follows a group of isolated survivors trapped inside a building that has been quarantined amid an unexplained zombie outbreak. As communication with the outside world becomes increasingly limited, the survivors are forced to navigate not only the horrors beyond their walls but also the growing tensions within their own group. Survival becomes a delicate balancing act between cooperation, trust, and self-preservation.
One of the film’s greatest strengths is how quickly it establishes tension. Colony wastes no time easing audiences into its world. From the opening sequences, the film introduces a sense of mystery and unease that immediately grips the viewer. Questions surrounding the nature of the outbreak, the purpose of the quarantine, and the behaviour of the infected become compelling hooks that propel the narrative forward.
Beneath the horror elements lies a surprisingly layered story. Themes of betrayal, desperation, and human nature sit at the heart of the film. As resources dwindle, the situation becomes increasingly dire, and characters are forced into impossible decisions that test both their morality and their loyalty. Colony continually asks what people are willing to sacrifice to protect themselves and those they love, often revealing uncomfortable truths about human behaviour in life-or-death situations.
The zombies themselves are among the film’s most memorable achievements. Fans of Train to Busan will immediately recognise certain similarities in their movements and aggression, unmistakably marking this as a Yeon Sang-ho production.
However, Colony introduces several key differences that distinguish its infected from many others seen throughout the genre. Without venturing into spoiler territory, the way these creatures evolve and interact with one another becomes central to the film’s identity and ultimately gives meaning to its title.
Creating something genuinely new within zombie horror is an incredibly difficult feat, but Colony succeeds in feeling unlike anything I have seen before. The infected are grotesque, disturbing, and often deeply unsettling, striking a fascinating balance between body horror and biological curiosity. Their design serves not only to frighten but also to reinforce Colony’s larger themes, creating visual motifs that become increasingly significant as the story unfolds.
Another aspect I particularly appreciated was the intelligence of the characters. Horror films often rely on poor decision-making to generate tension, but Colony largely avoids this trap. The survivors move with purpose, carefully considering their options and attempting to fend off incoming threats through creative and logical means. This approach makes the danger feel more authentic because the audience cannot simply dismiss setbacks as the result of obvious mistakes.
The film is packed with suspenseful sequences that keep viewers on edge throughout its runtime. At the same time, Colony incorporates occasional moments of humour that provide welcome relief without undermining the overall tone. These lighter moments feel organic and help make the characters more relatable, which only increases the emotional investment when danger inevitably returns.
Yeon’s directorial style is evident throughout the film. There are numerous moments that feel reminiscent of his previous work, particularly in the way he stages action sequences and builds escalating tension within confined spaces. But Colony never feels like a retread of past successes. Instead, it demonstrates a filmmaker refining his strengths while continuing to experiment with new ideas.
That said, Colony is not entirely without flaws. I occasionally found myself questioning certain scientific concepts presented throughout the story. Some explanations surrounding the outbreak and the behaviour of the infected stretch plausibility, even within the heightened reality of zombie fiction. While these moments did not significantly impact my enjoyment, they occasionally slightly pulled me out of the experience. Visually, however, Colony is consistently impressive. The film rewards attentive viewers through subtle environmental storytelling and carefully placed details that gain significance later in the narrative.
As the survivors become increasingly desperate, Colony gradually expands its worldbuilding, revealing additional layers of context between bursts of action and horror. Many of these revelations connect directly to the film’s central concept and the unique design of its infected, making the story feel cohesive and thoughtfully constructed.
The ending is particularly effective. While providing enough resolution to satisfy the immediate narrative, it also leaves the door wide open for future stories. The final moments clearly establish the potential for a sequel, and after experiencing the creativity on display here, it is a continuation I would be eager to see Yeon Sang-ho pursue.
Overall, Colony is a wonderfully inventive and grotesque addition to the zombie horror genre. Through its compelling concept, memorable creature design, strong visual storytelling, and relentless tension, the film manages to breathe new life into a genre that often struggles to surprise. For fans of zombie cinema, Colony offers a fresh perspective on the undead apocalypse. It is a thrilling, unsettling, and creative work that proves Yeon Sang-ho remains one of the most exciting voices working in genre filmmaking today.
Colony is currently playing in Sydney, Australia as part of the 2026 Sydney Film Festival. It has a general release in cinemas from June 11th.
For more information and ticketing, visit:
https://www.sff.org.au/program/event/colony