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The Great Oxygen Catastrophe: A Post-Apocalyptic Survival Thriller

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HYPOXIA CITY

London has turned into a vast charnel house. The ozone layer has been torn apart, and the city's nine million citizens have perished, suffocated as the oxygen vanished. The streets are carpeted with the dead, they lie in heaps in the Royal Parks, while the Underground network has become a subterranean maze of poisonous gas. Hardly anyone escapes the apocalyptic nightmare.

There is no help from outside because the entire world shares the same fate. Planet Earth has finally reached its carrying capacity and is collapsing like a convulsing corpse. 99% of people, gasping and clawing at their throats, perish in paroxysms of agony.

THE GREAT OXYGEN CATASTROPHE

Ben Ferguson and his family heed the warning signs and get out of London just in time. But the once lush and peaceful English countryside provides no sanctuary from the chaos, and their situation appears hopeless.

Naomi Chambers decides to shelter in place, but her violent ex-partner has other plans.

Lamont King will do anything to protect his son, Isaac. But he soon discovers a harsh the living will quickly envy the dead as scenes of butchery unfold across the land.

Tech tycoon Hugo Rainford-Brent remains unconcerned. He has constructed a doomsday bunker, his 'apocalypse insurance', where he intends to live in luxury as the world comes to an end.

475 pages, Kindle Edition

Published September 11, 2025

86 people are currently reading
56 people want to read

About the author

Mark Hobson

18 books7 followers

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5 stars
22 (34%)
4 stars
18 (28%)
3 stars
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2 stars
4 (6%)
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1 (1%)
Displaying 1 - 4 of 4 reviews
Profile Image for Nikki Houghton.
710 reviews16 followers
November 13, 2025
Show don’t tell should be the ultimate matrix for any writer. This author succeeds in demolishing this dictate with a very heavy hammer.
The plot is essentially a “warning warning warning” we’re all doomed and it’s all our own fault.
It follows the usual post apocalyptic road trip (a bit like a solar flare but with oxygen instead) the (transient) lack of o2 seems to knock out whatever the writer deems necessary and leave other stuff untouched - electricity, walkie-talkies his choice of disasters is optional - and the bad guy builds a posh retreat in which to practice his Evil Machinations etc etc; and there’s lots of fighting and guns and cod science and we never do find out what happened to Naomi and the ending is simply bonkers….
Also, how did they all get to the Isle of Wight? I mean the Solent is wide and you’d need a ferry…..bewildering and silly, this novel.
121 reviews
September 27, 2025
Great Dystopian tale - food for thought

As a regular reader of Dystopian fiction, I am often disappointed by the need to include ‘zombies’ or that they are only based in the US.
However this novel was excellent, with a good grounding in actual possibilities and UK based. Well written with believable characters and likely scenarios to give us all food for thought about our future. Now off to look for more by this author.
Profile Image for Lisa Raw-Rees.
5 reviews
November 6, 2025
Fascinating facts!

I found the scientific facts about what would actually happen if this scenario happened very interesting, and enjoyed the story, but was incredibly bored by the lengthy description of the two girls learning self defence. Unnecessarily long and added nothing to the story.
Profile Image for Jey.
583 reviews
October 11, 2025
The premise was interesting but the storytelling was robotic and told, no showed, the reader what was happening which leads to a disconnect. You cannot absorb yourself in the story when it’s written in such a way.
Displaying 1 - 4 of 4 reviews