
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.
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About

Deep within one of the SCP Foundation’s emergency containment sites, a catastrophic containment breach leads to multiple SCP subjects being released from their cells. With containment compromised, facility personnel rush to evacuate while waiting for Mobile Task Forces to arrive and restore order, but with the Class-D population running amok in a desperate attempt to escape, along with the involvement of the Chaos Insurgency, the fate of Site-02 remains uncertain.

SCP: Secret Laboratory (SCP:SL) is a free-to-play multiplayer horror game where you must escape from fearsome entities, or fight to secure a facility under the control of the SCP Foundation, an organisation which seeks to secure and contain anomalous items and creatures in order to protect humanity. These objects, or SCPs, range from mundane-looking items with extraordinary effects, to horrific abominations capable of bypassing the most impenetrable containment methods the Foundation puts in place.

Throughout the game, you will witness the perspective of the 5 different human classes, each trying desperately to survive. These include:
Scientists: Foundation personnel caught in the midst of the chaos, they must work with Facility Guards and the Mobile Task Force while using their equipment and wits to escape.
Class-D Personnel: Prisoners and test subjects using the breach to their advantage, they start with nothing and will do anything it takes to escape from the Foundation.
Facility Guards: The woefully unequipped first responders who must help the Scientists escape, prevent the Class-D from escaping, and hold back the SCPs for as long as possible until the Mobile Task Force arrive.
Mobile Task Force: Specialised re-containment agents sent into containment breaches to restore order and eliminate threats, they are tasked with assisting in the evacuation of Scientists and taking down anything that poses a threat to the Foundation.
Chaos Insurgency: Soldiers of an unknown directive, who are ordered to attack major Foundation sites and terminate all Foundation personnel. They also aim to rescue Class-D Personnel in order to gather useful information from them.

Site-02 is a sprawling maze of different zones. Light Containment Zone, where Scientists and Class-D Personnel reside. Heavy Containment Zone, where the SCPs are contained. Entrance Zone, where Facility Guards are stationed, and Surface Zone, where the evacuation point is located, along with the insertion points for Mobile Task Forces and Chaos Insurgents. The site is prepared for these breaches, containing numerous emergency measures — from Tesla Gates able to electrocute anything caught in the blast, to emergency bulkheads able to temporarily hold back threats from a fleeing target, or even the on-site nuclear warhead capable of vaporising the entire underground section of the site.

Despite all the security precautions and safety measures, Site-02 is not impenetrable. Fight alongside and against other players in order to help the Foundation restore containment and order, sabotage the site as the Insurgency, or kill everyone as a SCP in a murderous rampage.
Stats
Languages: English*, Polish, Italian, German, Spanish - Spain, Czech, Russian, French, Traditional Chinese, Korean, Simplified Chinese, Spanish - Latin America +6 more
Engagement
Reviews
Themes across 286 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
spawned as prisoner. got ambushed by guards, guards get ambushed by scps, scps get ambushed by blue guards. 10/10 would recommend
After 500 hours i have to say this game was worth the time. I think it definitely deserves more attention because playing a game like this for free in this economy is a blessing. 8/10
i am somebody who has played this game for thousands of hours and i am still not bored but recently i cant play it because of this weird bug where i try to join a server and it loads and stops at 2% then 90% witch then it loads to a black screen witch i cant leave only shut down my computer any help would be nice p.s. i have used all the stuff from google, ai, and youtube
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Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 289 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Very good game, some might say its repetitive but the different players and diferent "endings" are so fun
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This game is free but yet it feels like i'm crack that was made by ♥♥♥♥♥♥♥ walter white but in a good way PLEASE SCP 939 LET ME CRACKKKK
addictive fun easy to play runs on almost all computers and lots of players
Fun, in depth, scary, comedic, complicated, and enough to learn and experience that you can play forever. Wish there was maybe more maps.
amazing just uh dont play the official play Dr. Brights is what I recommend a few qol changes and thats it.
I have sunk about 70 hours in this game over a period of about 4 weeks, absolutely amazing and strangely addicting, first got it back in 2019 but only started really getting into it now. An absolute gem of a free to play game.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
Audience
Games most often reviewed by the same players — an audience-affinity signal from our review sample, not full ownership data.