Bacteriophage Swarm Build
Pathogenic Bacteriophage Launcher build: phage multiplication from dying enemies, on-kill trait synergies, rarity scaling, and launch-week balance notes.
Build Concept
The Bacteriophage Launcher from Update 4 fires viral projectiles that multiply from dying immune cells—distinct from Nidublast auto-minions or Mitotic Nidus cloning but sharing swarm density goals. You kite with Flagella while phage chains propagate through macrophage packs, turning crowded Intestine corridors into exponential clear windows.
Launch-week balance made damage scale with organelle rarity while raising stamina cost from twenty to twenty-five and reducing spawned minion HP. Phage multiplication received a slight nerf versus early demo builds—verify current tooltips before banking on infinite snowball clears on high Antibiotics tiers.
Pair two Mitochondria before stacking duplicate Launchers. Overcharge windows still matter for burst phases when phage propagation cannot keep pace with dendritic-supported elite walls in Liver.
Progression and Synergies
Skin through Intestine: secure first Bacteriophage Launcher and a Mitochondria cluster at common or rare quality. Prioritize rarity upgrades in shops before duplicating lower-tier copies—scaled damage rewards Epic and Legendary rolls disproportionately post-launch.
On-kill Traits multiply when phage chains secure kills—Explosive Charge infusers on adjacent Secretors add shrapnel while phage handles add density. Avoid Phagocytosis challenge unless melee pseudopods qualify; Photosynthesis bans weapon organelles including the Launcher.
Combine with Nidublast or Mitotic Nidus for hybrid swarms but watch CPU in soft-body physics-heavy rooms—enable fast physics in Settings if minion and phage counts stutter during Lung airflow segments.
Organ Routing and Boss Notes
Intestine main-chamber wave spawns maximize phage propagation—clear side rooms first to stack on-kill buffs before elite corridors. Stomach acid edges punish stationary phage farming; keep dodging with Pyroflagellum trails if offered.
Boss arenas with AoE wipes interrupt phage chains—burst dendritic supporters before dumping Overcharge into Kupffer Cell or Heart finale phases. Heavy Worm elites in Intestine resist chip phage unless rarity is Epic or higher.
Daily random weapon infusers may force Bacteriophage without supporting Mitochondria—practice standard runs before seeded leaderboard days that lock Launcher-only loadouts.
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Frequently Asked Questions
Bacteriophage versus Nidublast?
Launcher spreads phage from kills with rarity-scaled damage. Nidublast is an auto-minion gun capped at thirty spawns. Both fit swarm archetypes.
Does rarity matter after launch patches?
Yes. Damage now scales with rarity tier. Upgrade before duplicating low-tier copies.
Best pathogen for phage swarms?
Bacteria and Virus for ranged grids. Spore variants work when shop luck favors Secretor adjacency traits.