The game features a steampunk, anti-colonialist twist on the original work, shedding light on the lives and lands of people around the world in an alternate 1872 where artifice and automata have risen.
The gameplay consists of two main aspects, interactive fiction and travel management. The player must select a route around the world on the fly from location to location, along the way buying and selling items to make profit, choosing to explore areas, borrow money from banks, stay in hotels, gather information from people and ensure the wellness of Phileas Fogg.
The fiction sections are triggered when the player chooses to explore a location or stay in a hotel, or at fixed points when they are aboard transport.
The game's story varies greatly depending on the route taken by the player, making repeat playthroughs very valuable. The story begins when Phileas Fogg and Passepartout set off on their journey and has multiple endings depending on the result of the wager and the changing interests of Fogg and Passepartout.
The unique alternative 1872 the game is set in is notable. Power is displaced from the western nations, with groups like the Zulu and Ottomans being given more agency on the world stage. Women and racial/ethnic minority groups are able to occupy positions of power and garner respect, but issues that stem from the rapid changes of society like sexism and racism are still explored. Lastly, the setting has a steampunk tone, with automata and other inventions being created by artificers, who are present in every country in the world. Many are members of the worldwide-spanning Artificers' Guild, an organisation prone to corruption and ignorance but housing many great progressives and visionaries.
80 Days has had an exclusively digital release. It was released on July 31st, 2014 for iOS and December 16th, 2014 for Android. It reached PC and OS X on September 29, 2015.
The game was also nominated for several BAFTAs in 2014, best British Game, Best Story, Best Mobile Game and Game Innovation. It won TIME's Game of the Year award in 2014.