Bloodstream

Who you meet here

BossPlasma CellThe antibody factory. It drifts and strafes behind a turning Immunoglobulin wall, so you have to circle around it…Key guardianFibrin WeaverA living clot guarding the Plasminogen Activator. Keep clear of where its fibrin lands.GenePlasminogen ActivatorDissolves fibrin clots. Platelet clots no longer slow you.CancerLeukemiaA crowd of white blast cells that keep dividing. One gold leukemic stem cell hides among them: kill it and the whole…AssassinCirculating BlastA blast cell bristling with needle-like Auer rods. The fastest assassin of all.

Organ facts

Objective

"Ride the current to the Plasma Cell"

Boss

Plasma Cell, "The immune system's antibody factory"

Key guardian

Fibrin Weaver, holding the Plasminogen Activator. One door is sealed by a fibrin clot

Cancer

Leukemia (cancer cells keep dividing, so find and kill the glowing stem cell). Its assassin is the Circulating Blast

Hazards

a pulsing blood flow and solid red blood cells. There are no nerve endings here because blood has no sensory endings

Local cells

Platelets in clumps, Neutrophils, Natural Killer Cells, Complement, Macrophages, Monocytes, Plasmablasts and Basophils. Deeper rooms add Dendritic Cells, antiviral capsules, vaccine vials and Memory B Cells

Look

a deep red floor with streams of red blood cells and streaks of flow, inside a vessel wall lined with flat endothelial cells and rings of smooth muscle

Music

B-flat harmonic minor at 116 BPM with a square-wave lead

Size

17–21 rooms

Threat

enemy damage ×1.2, enemy health ×1.85, rewards ×2.2

Also in the Bloodstream

Tissue Hazards & TerrainOrgans & Bosses

Red Blood CellsSolid discs drifting with the pulsing blood flow. They shove you around and soak up shots from both sides.BloodstreamClots & Scar TissueSticky patches of clot left by dying platelets, fibrin attacks, goblet mucus and stellate scarring. They bog you right down.Bloodstream & deeperBlood FlowThe current pushes you in pulses that are strongest on each heartbeat, about 69 beats a minute.Bloodstream

Tumor PartsCancer

Leukemic blastA white cell almost filled by its nucleus. Blasts chase you and keep dividing.BloodstreamLeukemic stem cellThe gold-tinted, glowing cell that drives the leukemia. Kill it and every blast dies with it.Bloodstream

Tumor AttacksCancer

Uncontrolled divisionLeukemic blasts keep splitting into new blasts until the stem cell dies.Bloodstream

Organ MilestonesViruses

Filovirus: BloodstreamBleeds, Hemorrhage and Viral Hemorrhage hit another 50% harder, and any bleeding cell deals 35% less damage.Organ 3

The Organ MapIn a Run

BloodstreamRide the current to the Plasma Cell.Organ 3

Boss SetsGear & Store

Replicase ComplexThe Plasma Cell's set, built around your ultimate.Organ 3 · Bloodstream

Audio & PresentationGame Modes

Bloodstream themeFast and tense.Organ 3

Found in every organ

Abyss PitsBottomless gaps in the tissue. Falling in is a heavy blow, not instant death.Any organDrop ShaftsA rare glowing shaft in one of an organ's deeper fight rooms. Walk in and the current sweeps you into a freshly shuffled layout of the…Rare

From the Codex