Note: The screenshots that accompany this article are from 80 Days.

Developer inkle, along with Cambridge-based studio Cape Guy, has been busy this past year rebuilding 80 Days from the ground up in Unity 5 for PC and Mac. A mobile version of the game has already been released.

80 Days takes place in an alternate steampunk version of Jules Verne’s Victorian era. It sends players on a real-time race around an ever-changing world.

You’ll travel by airship, submarine, mechanical camel, steam-powered train and more as you experience massively-branching multiplayer interactive fiction.

Built into the game is a live feed showing events happening in-game as and where they occur, to others players around the world. You’ll see the consequences of your choices compared to those of other players.

80 Days will be released on Steam, GOG and Humble Store on 29th September 2015. Alongside the PC & Mac edition, all versions will receive a new content update with 30 new cities filling North and South America, with major new characters and plot-lines worldwide.

Creative director Jon Ingold: “We founded Inkle to explore what new narrative experiences were possible on tablets and phones, and it’s really satisfying to be bringing the results of those experiments back to more powerful desktop machines. We’ve got some pretty ambitious ideas.”

Also by inkle and originally released on iOS and Android, Steve Jackson’s Sorcery! is a four-part fantasy adventure inspired by the gamebooks of the 1980s. With tens of thousands of choices, the story unfolds in response to the player’s actions.

Battle strange, deadly creatures, cast powerful spells, play with honor or lie, cheat and steal. The fate of the land of Kakhabad is in your hands!

Sorcery! Parts 1-3 will release roughly once a month on a schedule that will be announced soon. A fourth and final Sorcery! installment is in development for PC and Mac as well as iOS and Android.