Multi-Floor Layouts in SCP Architect X

Unlocking Multiple Floors

Research Multiple Floors for $22,000 and a two-hour timer from Foundation Management. Until completion, floor ascension buttons and Shift+E shortcuts remain disabled for construction purposes—you effectively operate a single-level site. After unlock, staircases appear in the structure catalog and upper floors become editable via Shift+E / Shift+Q or Page Up / Page Down.

Newly unlocked elevators and scanners often appear in the Structures tab or basic-needs category—check both if items seem missing immediately after research completes.

Elevators vs Staircases

Staircases are cheaper footprint solutions for low traffic between two floors. Elevators cost $5,000 per placement but allow stacked vertical transport—walk in and ascend multiple levels when shafts align. Community wiki notes confirm elevator stacking unlike staggered stair runs. Use elevators for central hubs connecting containment basements, research mid-levels, and executive rooftops.

Place elevator shafts during initial blueprinting even before upper floors exist—retrofitting through finished wings wastes undo stacks.

Vertical Zoning Strategies

Popular pattern: ground floor Class-D housing and Test Subject Zones, mid floor anomaly containment and laptops, top floor Lab Stations and server rack vaults. Separating inmates from scientists reduces riot contagion and shortens role-specific paths. Security stations span multiple floors near stairwell choke points.

Each floor needs maintenance coverage and cafeteria access or beta needs systems punish upper-level staff. Duplicate medbays per two floors minimum once Euclid testing begins.

Floor Controls During Construction

In build mode, Shift+E ascends the editing plane one level; Shift+Q descends. Confirm you are on the intended Z-level before pressing F to submit tiles—accidental ground-floor walls on upper coordinates are a common mistake. Combine floor shortcuts with undo when experimenting with atrium cutouts or skylight containment pods.

Multi-floor sites shine after Foundation Transport and Euclid research when horizontal Wilderness captures force horizontal site expansion—go vertical to preserve walk efficiency.

Example Multi-Floor Blueprints

Blueprint A — Tower: ground logistics, mid containment, top research plus server vault. Central elevator stack at map center. Blueprint B — Campus: two-floor L-shape with external stairwell at corner and cafeteria bridging both floors. Blueprint C — Bunker: anomalies underground, staff above ground for roleplay separation—requires careful elevator placement at tunnel entrance.

Test NPC pathing on each floor after connecting stairs or elevators. A perfect vertical render means nothing if Class-D cannot descend to cafeterias during beta needs events.

Elevator Stacking and Shaft Planning

Stacked elevators let staff jump multiple Z-levels in one interaction—valuable for 3+ floor towers. Align shaft tiles vertically in build mode using floor shortcuts before submitting each segment. Misaligned shafts force expensive demolitions.

Staircases remain useful as emergency paths when elevators congest during riot events—dual vertical routes are S-tier multi-floor design.

Staff Needs on Every Floor

Beta NPC hunger, energy, and bathroom systems apply per staff member regardless of floor. Upper-level scientists without elevator access to cafeterias become riot vectors downstairs. Duplicate cafeterias or centralize dining on a middle floor with elevator hubs—never strand Class-D on a rooftop without services.

Maintenance closets per floor prevent Clean bonus collapse when testing litters upper containment levels while ground floors still look pristine.

When to Research Multiple Floors

Queue Multiple Floors as soon as Safe income hits roughly $15,000 liquid—usually within the first few hours. The two-hour timer overlaps naturally with SCP-005 connection and second Lab Station placement. Delaying vertical research while horizontal sprawl already strains walk paths forces expensive demolition later and wastes Safe income momentum.