One Hour One Life

Did You Know?

• The game stopped development on 11 November 2025 so Rohrer could work on other projects.
• Two Hours One Life is an open-source fork where the player's life lasts a maximum of 2 hours (120 in-game years), with new items, mechanics, and balancing changes decided by the community.
• Rohrer deliberately avoided putting the game on digital distribution platforms such as Steam and GOG initially, citing the large amount of work needed to integrate the code and the control offered by independent hosting.

Gameplay

Players spawn randomly either as a child with a mother or as a young adult Eve if too many babies exist. Each minute played equals one year of life; for the first three years players cannot interact with objects and rely on others for feeding, speaking only one letter at a time. A food bar varies with age, filling until adulthood at 17 or 18 and depleting after age 40. Players die of old age at 60, or from animals, other players, or an empty food bar. Permadeath means restarting from nothing. Over 3000 human-makeable objects exist, produced by clicking one object then another to combine them. Players have equal chance of being male or female; only women can birth new players between ages 14 and 39, and playing as a male may be easier due to lower risk of causing another player's death.

Development

Rohrer said the idea came from a thought experiment about how long it would take humanity to go from arrowheads to iPhones with current knowledge. In an interview, he discussed problems with building society in Rust and planned to remedy them in One Hour One Life, arguing that trolling and lack of death impact hinder justice and community. The permadeath mechanic and initial helplessness as a baby force cooperation. Rohrer noted that themes of death and choices in the face of death are constant in his career, and he saw the game as bringing together ideas from his other works. Sustainability is key; villages risk overexploiting surroundings, so successful communities need good resource management. Rohrer described this as necessitated by high difficulty reinforced by repeated failure: all villages die eventually, but cooperative, sustainable societies last longer. Players have improved at continuing family lines, which Rohrer attributes to emerging culture, morality, and taboos. He stated the game had been in development for three years and he had at least two more years of work, aiming for 10,000 craftable objects. He created a program that automatically traces sprites from scanned images and records crafting sounds with his own voice.

Reception

KG Orphanides in Wired described the game as tough but more accessible than Rohrer's other games, praising its short sessions for casual play and its social aspects. Matthew Gault in Vice Motherboard said the game broke his heart and restored his faith in humanity, noting survival gameplay reminiscent of Don't Starve while touching on sustainability, morality, and civilization, and that players generally take care of each other. Roberto Turrini in The Games Machine called it a masterpiece of game design with no negative aspects, rating it 9/10. The game sold 315 copies at its Steam launch compared to 2400 for Rohrer's The Castle Doctrine, but sales improved, grossing almost $700,000 four months after launch.

You Are Hope

Developer Dual Decade runs an unofficial mobile fork titled You Are Hope for iOS and Android, using a fork of the One Hour One Life source code on an independent server, with changes and additions. Only the Chinese version has ads. Jordan Thompson for TouchArcade rated it 4 out of 5 stars, calling it a more mechanically deep version of Don't Starve and praising player interaction and life-and-death decisions. Maria Alexander for Gamezebo gave it 4.5 out of 5 stars, calling it a crafter's dream due to material breakdown options; both reviews criticized mobile controls, though Gamezebo considered it minor. In August 2018, Dual Decade created a mobile port originally titled One Hour One Life for Mobile, which Rohrer initially agreed was fine. In March 2019, Rohrer publicly expressed frustration, worrying the same name could mislead buyers into thinking it was his product, though Dual Decade labeled it unofficial in English and Chinese descriptions and stated which updates they ported. Rohrer wrote an Open Letter to the Mobile Developers, citing a reviewer unaware the port was not by him and a Chinese player who thought Dual Decade was stealing the game, though the wording only stated it was the Chinese adaptation by Dual Decade. Dual Decade expressed concerns about performance if labeled unofficial. Rohrer asked them to state it was an unofficial adaptation, which they did in English but not Chinese. A Dual Decade spokesperson cited their rights to use the public domain work and name, attempting to negotiate. As a result, Dual Decade agreed to hard-fork the game, changing graphics and title, and continuing independently. The name changed to You Are Hope on 22 March 2019.