Hiraeth

Hiraeth is a first-person, single-player hard sci-fi survival game set on Ahra Prime, a vast alien planet where a thriving colony once stood. You awaken alone among silent bases with failing power and flickering systems. You must survive long enough to investigate what happened to the colony and decide what home means when everything familiar is gone.

Survive on Ahra Prime

You manage oxygen, power, hydration, hunger, temperature, stamina, injuries and suit integrity. Equipment wears down and needs maintenance, while dynamic time and weather affect fatigue, item wear and visibility. Predators, environmental hazards and unpredictable encounters make even shelters and bases potentially dangerous; the game provides no guided path or hand-holding.

You craft and upgrade tools, weapons and survival gear, and enhance your EVA suit to improve its resistance, efficiency and survivability. You can choose a quirky alien slug or a high-tech droid as a companion, and use vehicles to cover long distances and reach remote locations. Optional full-body awareness lets you see your body and equipment in first person.

Explore the island

Your journey begins on Nesoi Island, a handcrafted region that you can scout from afar, including through a sniper scope. You explore its land, underwater caverns, abandoned structures and ruins for resources, lore fragments and clues to the planet’s collapse. Dynamic day and night cycles and unpredictable encounters add tension to exploration.

Game modes

ETERNAL Mode is an endless survival sandbox where you learn the systems, adapt and push deeper into the world. Lore evolves with each attempt. REVELATIONS – Story Mode tells a narrative across five chapters, with the enigmatic Stranger as your guide. Each chapter has a complete arc, and the story culminates in a finale.

Progress and challenges

Progressive skills and perks let you shape your playstyle, and multiple difficulty levels range from relaxed exploration to brutal survival. Randomization, player choices and evolving world systems make each run different. A Training Course introduces the core mechanics at your own pace, and the game includes over 20 Steam achievements.

Sound and atmosphere

An electronic soundtrack accompanies the isolation, tension and discovery of Ahra Prime.