Steam

X300

Also known as X300, steam:3813640, x

Search for your missing brother across the Australian Outback and beneath a forgotten Cold War facility. Survive altered wildlife, a living front of black ash, and an unseen intelligence that watches how you play.

Last update

5 Aug 2026

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Latest update

Patch notesPublished 20 Jul 2026

X300 Steam Page Now Available in Every Supported Language

We are happy to announce that players around the world can now read about X300 in their own language. Read about X300's Australian Outback setting, psychological horror, desert survival, underground Facility, and person…

7 changesUI/audioRead patch notes

Update history

Browse past updates and patch notes for this game.

10 updates

July 2026
X300 Is Coming to PAX Aus 2026From 9–11 October, you’ll be able to find Covyne Entertainment at PAX Rising, Booth 24, inside the Melbourne Convention and Exhibition Centre. For the first time at PAX Aus, players will be able to step into the isolate…Event2 changesMaps29d ago
We are happy to announce that players around the world can now read about X300 in their own language. Read about X300's Australian Outback setting, psychological horror, desert survival, underground Facility, and person…7 changesUI/audio20 Jul 2026
June 2026
Facility Improvement UpdateHello Dears, Everyone has been terribly busy downstairs again. The engineers have submitted another progress report for Personnel to review. Recent Facility Improvements are as follows: A new puzzle has been installed w…Announcement4 changesGameplayCompatibility28 Jun 2026
AVcon Adelaide Upcoming EventX300 is Heading to AVCon Adelaide! We're excited to announce that X300 will be playable at AVCon Adelaide on July 4–5. This will be the first opportunity for many players to experience our slow-burn psychological surviv…Event1 change12 Jun 2026
May 2026
This is an early look at X300, an upcoming psychological survival horror experience set in the Australian outback. A limited number of prototype access keys will be provided exclusively to streamers and content creators…3 changesGameplay25 May 2026
FACILITY TRANSMISSION #01Deep beneath the Australian outback, something still remains inside X300. Over the past few weeks we’ve been exploring facility environments, refining gameplay mechanics, and concocting psychological tension throughout…Announcement2 changesGameplay23 May 2026
March 2026
Covyne Entertainment is heading to TGX – The Game Expo Melbourne!Covyne Entertainment will be attending TGX – The Game Expo in Melbourne, and we’ll be bringing something special with us. For the first time ever, players will be able to experience X300, our upcoming psychological surv…Event1 change14 Mar 2026
December 2025
Introducing X300 - A Change in DirectionEarly in development, this game was announced under the working title Maralinga and was framed around real historical events connected to Australia’s nuclear testing era. As development progressed, we took time to refle…Event3 changesGameplay26 Dec 2025
September 2025
Work Begins on Maralinga Hello Survivors, We’re excited to officially announce that development has begun on our next project: Maralinga – a survival horror thriller set in the eerie ruins of Australia’s infamous nuclea…04 Sept 2025

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X300 Steam Page Now Available in Every Supported Language

July 2026

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September 2025