
Screenshots

Watch trailer on Steam ↗The Great Smog
JFi Games · Published by JFi Games · Official site ↗
5 user reviews — 40% positive (5 reviews)
Last updated 27 Sept 2026
A Steampunk Co-Op Horror for 1-4 players. Descend from your fully customizable airship into the streets of Post-Apocalyptic Victorian London to scavenge resources, craft gear and take on terrifying mutants inspired by British myths.
£10.99
Lowest price we've ever recorded
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Price history
Action, Adventure, Indie, RPG, Simulation, Early Access · 2025 · More £5 - £15 games
Embark on a thrilling adventure as you and up to three others descend from your airship into the dangerous streets of post-apocalyptic Victorian London, scavenging resources and crafting gear against terrifying mutants inspired by British myths.
About this game
You and up to 3 of your friends are Commissioned Officers of the United Africa Company, now colloquially known as Smog Runners. Where once your commission might have taken you to exotic locations across the globe, now your mission is very simple - carry all the salvage you're able to from the mutant-infested streets, and don't die in the process.
Use all your cunning and willpower, and run like hell, and you might be able to profit from the treasure troves nestled deep in the heart of the mutant-ridden streets of London. Until then, make sure your airship is fueled, your rusty pipe is in good nick, your gas mask is fitted properly, and you haven't miffed off any of the factions vying for control over what's left of the Empire.

Explore various iconic landmarks of London, such as St Paul's Cathedral and the Tower of London, and the ruins of an Empire on the cusp of revolution, both technologically and politically. Uncover the secrets behind the mysterious Great Smog and the world it ravaged.
Take part in the battle for the Empire's uncertain future, aligning yourself with the various factions that survived the catastrophe. Will you recover the Crown Jewels to help the Aristocracy crown a new king, or scrap them for the metal to craft explosives for the revolutionary Trade Union Congress? Or just hang them on your mantelpiece?

Horrifying mutants, twisted by the Smog, prowl the streets below. In order to survive, you must keep your airship stocked with fuel recovered from the surface. In order to thrive, you must gather and break down everything that isn't nailed down to make new weapons and traps, or take contracts to recover lost trinkets and old world relics for profit.
Whether scavenging to survive or to get the resources to craft that one perfect decoration for above your fireplace, you will run into danger. And with random loot locations and mutants in every run, you will never know quite what to expect.
Take on the streets of London however you like, through stealth, utilizing the environment, or perfectly placed traps. Hide, run or fight - the choice is yours. Just make sure you're well stocked if you choose the latter.
A wide array of cosmetic choices ensure that your Smog Runner is truly yours. And should you manage to keep it fueled, your airship, your mobile base in the sky, is fully customizable with decorations, furniture and storage.
When you begin your journey in the Great Smog, you will be woefully unprepared. Death is almost certain, whether by a monster stalking you through London's alleys, your oxygen running out too far from your bathysphere, or your airship's fuel tank being empty. But with ingenuity and perseverance, you and your friends will overcome these challenges and eventually be able to go toe to toe with foes that once seem insurmountable.
System Requirements
Will my PC run this? →Minimum
- DirectX: Version 12
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Patch (22/11/2025)
- minor bug fixes and stabillity changes - fixed issue where the game size is twice what it should be - ai balancing on lower difficulties - issues when quitting not killing the process solvedRead full article on Community Announcements (Drippy)Patch NotesOfficial
Patch Notes (09/11/2025)
• Emote wheel issues after travel and glitches • Stalker in The White Tower not moving • Improved memory issues after travellingRead full article on Community Announcements (Drippy)Patch NotesOfficial
Patch Notes (08/11/2025)
• Performance improvement for all areas (most notably The White Tower) • Player mic slider now is persistent after death • Right click no longer causing the build menu after dropping trap • After death player HUD is no longer glitching • Spectating player icons only show dead players • Can no longer see own mic in sound settings • Spectating as host shows correct spectate player information • Emote menu doesn’t appear in front of important menus • Ghost is no longer in the floor for the client • Oxygen tank from 10 minutes to 8Read full article on Community Announcements (Drippy)Patch NotesOfficial
Post release feedback changes
• Sound settings - ability to reduce sound volume by different groups such as environment, music, UI etc. (we still might have missed some sound effects, as there are so many) • Can adjust other player's mic volume (however there may be some bugs with this feature we will address in coming patches) • Reduced intro video and loading screen volume level • Decreased the amount the gas mask overlay takes up the screen - the biggest factor is your FOV value and screen resolution (we intend on adding a toggle in the next patch for completely hiding the gas mask overlay) • Adjusted in-game mic distance, as well as, made it so AI can again hear you speakingRead full article on Community Announcements (Drippy)








