The indie horror scene has consistently delivered unique and terrifying experiences, and Iron Lung stands out as a masterclass in claustrophobic dread. This short, yet intensely unsettling game thrusts players into the cramped confines of a rusty submarine, tasked with exploring a blood-filled ocean on an alien moon. Its success lies in its masterful use of atmosphere, sound design, and the sheer terror of the unknown. If the thought of being confined in a perilous vessel, navigating darkness with limited visibility, and facing existential threats appeals to you, you're in for a treat. In 2025, the quest for similar chilling experiences continues, and we've compiled the top 5 best games that capture that unique Iron Lung essence.
1. Barotrauma
If you crave the deep-sea submarine setting of Iron Lung but want a more complex and multiplayer-focused experience, Barotrauma is an exceptional choice. Set on the Jovian moon Europa, this 2D co-op submarine simulator plunges players into a hostile underwater world. You and your crew must manage the submarine's systems, navigate treacherous alien seas, and battle monstrous creatures that lurk in the abyssal depths. The game excels at creating tense, emergent gameplay where communication and teamwork are paramount. A single system failure can quickly spiral into a catastrophic event, mirroring the precariousness felt within the Iron Lung.
Barotrauma Steam (PC) - Steam CD Key - Global is available in our store
2. SOMA
While SOMA offers a more narrative-driven and less purely mechanical horror experience than Iron Lung, it shares a profound sense of isolation and existential dread. Developed by Frictional Games, the creators of Amnesia: The Dark Descent, SOMA takes place in an underwater research facility called PATHOS-II. Players awaken with amnesia and must unravel the mysteries of the facility and their own identity, all while being hunted by corrupted robots and facing philosophical questions about consciousness and humanity. The oppressive underwater environment and the feeling of being trapped with unknown dangers are strong parallels to the Iron Lung experience.
3. Diluvion
Diluvion blends exploration, combat, and a touch of survival horror within a beautifully rendered underwater world. Players command a customizable submarine, delving into the ruins of a flooded civilization. The game offers a compelling sense of discovery as you uncover ancient secrets and face off against unique aquatic foes. Like Iron Lung, the claustrophobic nature of the submarine and the vast, unknown darkness outside contribute significantly to the tension. Managing your submarine's resources and crew adds another layer of strategic depth to the harrowing dives.
Diluvion Steam Key EUROPE is available in our store
4. Subnautica
Subnautica takes the concept of deep-sea exploration and survival to an open-world scale, but don't let that fool you. The terrifying moments of venturing into the crushing depths, with limited oxygen and only your submersible's lights to guide you, are directly reminiscent of Iron Lung. Stranded on an alien ocean planet, players must craft, build bases, and explore a vast and dangerous underwater ecosystem. The sheer scale of the ocean, coupled with the presence of colossal, terrifying creatures, creates a palpable sense of dread and vulnerability, especially when you're deep below the surface in your small, fragile vessel.
Subnautica Steam (PC) - Steam CD Key - Global is available in our store
5. Stranded Deep
While primarily a survival game set in the Pacific Ocean, Stranded Deep offers moments that will resonate with fans of Iron Lung. When venturing out in your raft or attempting to explore underwater caves and shipwrecks, the feeling of isolation and the potential for unseen threats lurking beneath the waves are undeniable. The focus on resource management and the constant threat of the environment, from sharks to drowning, can evoke a similar tension to being alone in a confined space, facing the unknown. The vastness of the ocean and the vulnerability of your small craft are key elements that connect it to the Iron Lung vibe.
Conclusion
The allure of Iron Lung lies in its ability to distill pure terror into a confined, atmospheric experience. While no game can perfectly replicate that specific brand of dread, the titles listed above offer compelling alternatives that capture its essence. Whether you're seeking deep-sea submarine co-op chaos in Barotrauma, existential horror in SOMA, atmospheric exploration in Diluvion, vast alien ocean survival in Subnautica, or isolated aquatic survival in Stranded Deep, there's a terrifyingly good adventure waiting for you. Dive in, if you dare.
