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As a Class-D subject in a breached SCP facility, scavenge access items, evade anomalies, and manage blinking to escape.
Released 20 Feb 2026
Blink Under Threat
Explore Changing Corridors
Find Access Keycards
A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?
Developed by Undertow Games, Third Subdivision Studios, SCP-CB Community Preservation Project · Published by SCP-CB Community Preservation Project








You play as a Class-D test subject caught in a containment breach at an SCP Foundation research facility. With anomalies loose and the facility in chaos, your goal is to find a way out while piecing together what happened.
Explore dark corridors, search rooms for useful items and access cards, and solve obstacles such as locked doors and security systems. Documents and other clues reveal information about the facility and the anomalies inside it.
The facility layout changes between runs, so routes and encounters are difficult to predict. Survival means learning how different anomalies behave; against SCP-173, you must watch it closely while managing the need to blink. Items can help you navigate, and your choices can lead to different endings.
In the supplied reviews, players often praise the tense atmosphere and unpredictable encounters, especially the pressure of managing the blink mechanic around SCP-173. Reviewers also appreciate the changing facility layout and the community-maintained release’s fixes and Workshop support. Some describe the game as difficult or unclear to navigate, and report bugs, clunky controls, or dated visuals.
SCP - Containment Breach is a free survival horror game written in Blitz3D. The events of the game take place in a containment site of The SCP Foundation, a secret organization dedicated to containing and researching anomalous artifacts and entities that threaten the normality of the world. You're thrown into the boots of a Class D test subject, one of the Foundation's disposable human guinea pigs.
Not long after receiving your first assignment, the facility undergoes a massive containment breach, leaving you alone in the darkness with the escaped entities roaming around the facility.
Your goal is to make it out alive. You can also search the facility for documents and other clues to figure out what led to the breach, and even attempt to do your part in fixing the situation.
The main antagonist of the game is SCP-173, an animate concrete sculpture that kills all living things on sight, moving toward its victims at a speed of several feet in one blink of an eye and snapping their necks with irresistible strength and lethal precision. Fortunately, SCP-173 has one key weakness: it is frozen in place as long as someone is looking at it.
To make things more interesting, SCP - Containment Breach has a blinking mechanic that forces the character to blink regularly (which often has fatal consequences in the vicinity of SCP-173).
One of the key elements of the game is the procedurally generated map - no playthrough is the same, and you can never know for sure what is going to happen next. There are plenty of obstacles to make the way out of the facility less pleasant. Decontamination gas that makes you blink faster, locked doors that require a key card with a sufficient security clearance or a specific access code to open, timer switch controlled doors, and of course, several escaped SCPs.
Escape the SCP Foundation as a Class D in this free survival horror. Outrun SCP-173—a killer statue that strikes when you blink. Every run is unpredictable. Survive or die trying.
Made with ❤️ by a group of dedicated fans, this release is filled to the brim with community-created fixes, quality of life improvements and extensive Steam integration. Support for DirectX 9 allows the game to run smoothly on modern systems and screen resolutions, while the dedicated modding & workshop support makes it easier than ever to create, share and play community-created modifications. To this end, the fan-favorite open-source Containment Breach Room Editor Extended (CBRE-EX) is bundled, making room creation an enjoyable experience! This is the definite way to enjoy this horror classic!

| Platforms | Windows |
|---|---|
| Achievements | 37 |
| Age ratings |
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| Controller required | No |
| Website | Official website |