SCP: Containment Breach walkthrough: all SCPs and endings
SCP: Containment Breach is a free indie horror game from 2012 by Undertow Games that became a genre classic. You are a Class-D employee in an SCP Foundation site; after a containment breach you must escape the facility alive. The map is procedurally generated, so every run is unique. Below is a full walkthrough: every dangerous SCP, key items and both endings. Spoilers from the start.
Basics: surviving the first minutes
- SCP-173 cannot move while you look at it. Never turn your back without a reason, keep a retreat path open and close doors behind you — the statue opens them, but slowly.
- Blink on time. The blink bar in the corner is your main resource. Never let it force a blink near 173.
- Save at consoles. Save points are scattered across zones; death loses your progress.
- Key cards. Level 1–5 cards and the Omni card open progressively more doors. Key spots: the SCP-914 room, offices, storerooms.
Chapters: from the light zone to the exit
| Stage | What to do | Main threats |
|---|---|---|
| Light Containment Zone | Find a key card, upgrade it at SCP-914, learn corridors level by level | SCP-173, SCP-372, zone decontamination |
| Heavy Containment Zone | Pass checkpoints, disable Tesla gates at the electrical panel, bring a gas mask | SCP-049, SCP-096, SCP-106, Tesla gates |
| SCP-914 and below | Upgrade the card to level 5, collect finale items | SCP-939, SCP-1048 |
| Entrance Zone | Find the surface elevator, avoid Tesla gates, watch radiation | Security, MTF on the surface |
| Exit | Choose Gate A or Gate B | SCP-682 behind the fence, MTF firefight |
SCPs: how to survive each one
| SCP | Rule of survival |
|---|---|
| SCP-173 "The Sculpture" | Never stop looking. Blink near doors, back away facing it. |
| SCP-106 "The Old Man" | Run when he appears: he drags you into the pocket dimension. Escape it via the light staircases. |
| SCP-096 "The Shy Guy" | Never look at the face — live or on camera. |
| SCP-049 "The Plague Doctor" | Do not let him touch you: one touch is lethal. Detour around his chamber. |
| SCP-939 | It hunts by sound: move slowly and never run in the dark. |
| SCP-914 | Your best friend. Upgrade cards and items, but do not stand inside on "Very Fine". |
| SCP-079 | The AI controls doors and cameras. It can lock you in a room with 173 — keep away from security cameras. |
SCP-914: what to upgrade
- Key card: Fine mode raises the level by one step; the goal is a level 5 card or Omni.
- Gas mask: Fine mode makes a super gas mask that protects against gas in the heavy zone.
- S-Nav 300 navigator: the upgraded version shows your position and nearby SCPs.
- Small first aid kits combine into better ones — useful for the finale.
Endings: Gate A and Gate B
Gate B. With a weak key card, MTF soldiers will capture you. To unlock the real Gate B ending, descend to the warhead control office in the heavy zone and detonate the site: SCP-106 dies and a helicopter evacuates you.
Gate A. If you contain 106 via the "femur breaker" (the chair and button in his containment chamber) and exit through Gate A, the finale involves SCP-682: a final cutscene and the credits.
Tips
- Explore the light zone methodically: all rooms on a floor first, then head north — you will not get lost.
- Always carry a spare medkit and flashlight: darkness kills faster than SCPs.
- Never skip SCP-914: a level 5 card saves hours of wandering.
- Save before every zone: the generator punishes rushing.
- Hear SCP-096 crying? Run the other way without turning to face him.
Frequently asked questions
How many endings does Containment Breach have? Four: two via Gate A (with 682 and with evacuation) and two via Gate B (MTF arrest and the explosion with helicopter evacuation).
Is the game free? Yes, officially distributed for free on the Undertow Games site and on Steam.
Is there multiplayer? A fan-made Containment Breach Multiplayer mod exists, but the original is single-player.
How do you beat SCP-106? Lure him into the containment chamber and run the "femur breaker" via the control panel in the adjacent room.
What is the latest version? The final original release is 1.3.11; after that the project is only supported by fan mods.
Last updated: September 19, 2026.