One Hour One Life is a 2018 survival massively multiplayer online game developed and published by Jason Rohrer. Each player lives for, at most, 60 minutes in a large, persistent world, with each minute representing a year of life. They must gather and grow food, craft tools and build societies in order to survive. The game's source code and assets are placed into the public domain, and are freely available on GitHub, with accounts being sold for access to the primary servers hosting the game. Originally available only on the website onehouronelife.com, it was later released on Steam in November 2018.
Separate from the servers hosted by Rohrer, an independently developed, unofficial fork of the game created by Dual Decade exists for iOS and Android devices, titled You Are Hope. It is almost exactly the same as the PC version, other than slightly different graphics and a different creator.
The main ideas influencing the game's design are player cooperation, sustainability and the prospect of developing a civilization. The game has had a positive reception, with critics comparing the game favorably to Don't Starve and praising its social aspects. Rohrer has stressed the continued development of the game until at least 2020. The game was most recently updated in June, 2023.
Gameplay
Players spawn randomly into the world either as a child, with another player as mother, or as a young adult, an Eve, if the number of babies is already too high. Each minute played represents one year in the life of the player's character. For their first three years, players are unable to interact with objects and rely entirely on other players to feed them, while initially only being able to speak one letter at a time. Each player has a food bar, whose size varies with age, that fills until full adulthood (17/18) and depletes over time when a player hits 40 years old. Players die of old age upon becoming 60 years old, but can also be killed by animals, other players, or their food bar being emptied. One Hour One Life is a permadeath game, meaning that a player restarts from nothing after dying.
One Hour One Life has over 3000 human-makeable objects, which may be produced through crafting. The process of crafting involves clicking an object to pick it up, then clicking on another object in an effort to combine them. Crafting is necessary as the food sources available without it are limited.
Players have an equal chance of spawning either as a man or as a woman, which the only difference being that women alone can birth new players when they are between the ages of 14 and 39. The importance of women in the survival of a tribe often leads to male children being disfavored if there is a lack of food. However, playing as a male character may be easier due to a lower chance of causing another player's death.
Development
Rohrer has said that the idea that led to the game was a thought experiment about how long it would take for humanity to get "from arrowheads to iPhones" with "the knowledge we have today". In an interview in Destructoid, Rohrer discussed the problems with building a society in the game Rust, and how he planned to remedy those issues in One Hour One Life. He argued that the occurrence of trolling and the lack of impact of death are detrimental to creating a system of justice and, by extension, building a community. In One Hour One Life, the permadeath mechanic and the initial period of helplessness when a player spawns as a baby serve to force people to work together. Rohrer also commented that the themes of death and the choices made in the face of death are "constant in [his] career" and saw One Hour One Life as bringing together the ideas found in his other games into a "cohesive whole".
An important part of the game is the idea of sustainability, which Rohrer discussed by email with Matthew Gault, writing in Vice Motherboard. Because villages run a risk of overexploiting their surroundings, successful communities require good resource management. Rohrer describes this as necessitated by the game's high difficulty, which is reinforced by repeated failure: all villages will die eventually, but the societies supporting cooperation and sustainability are able to survive longer. Over time, players have become better at continuing family lines, which Rohrer attributes to the emergence of culture, morality and taboos supporting these ideas. This is connected to Rohrer's own belief that morality does not exist as an independent concept but has evolved for practical reasons.