Immune Siege: Cell Defense

Bacteria and viruses are swarming toward your body's barrier — and they never stop.
Build your cell defense: deploy and upgrade 8 immune cells — Neutrophil, Macrophage, NK Cell, B Cell, Killer T Cell, Plasma, Platelet and Red Blood Cell — to hold the line against the germ invasion.

■ A tower defense where the towers are real immune cells
· Every cell fights differently: rapid fire, shotgun blasts, chain lightning, homing antibodies, piercing lasers, slowing fields, spinning blades and artillery.
· Charge up, tap a cell, and unleash its Ultimate to wipe out a screen full of germs.
· Combos make every wave flashier.

■ Tougher enemies, unique bosses
· 50+ kinds of bacteria, from harmless to deadly.
· Virus bosses every 5 and 10 stages, a Giant Virus every 100 — each with its own tricks.
· A long journey up to Stage 1,000.

■ Grow your army
· Cells up to LV 50 MAX, evolving looks every 10 levels.
· Risky Mutations with rare materials — succeed and they become monstrously strong.
· Unique skills and passives for every cell.
· In a pinch: Flu, Pox and COVID vaccines, plus the Panacea!

■ Play on PC and phone
· Sign in with Google to continue the same progress in your PC browser and on Android.
· Start instantly as a guest and link an account later — nothing is lost.
· Climb the combined PC + mobile World Ranking.

Recent changes:
v3.26 Update
• Half-price recruit (stages 5/8/11) right on the result screen
• From stage 2, boss-shaped mini viruses join the waves
• Tap the wall bar to pause and upgrade your wall
• Top bar: SPEED label, time left for 1.5× and Gold ×2, gold & diamonds on two lines
• New battle track (4, random) · new button sound
• Better early guidance · first Macrophage free
• Germs behind the top bar can't be hit until visible
• GOGOCOM intro each launch; returning players go straight to main