Immune Siege: Germ Defense

Bacteria and viruses are swarming toward your body's barrier — and they never stop.
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.

■ Defense that's a joy to watch
· 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:
v3.10.1 Update
- Links in mail are now tappable — new "Go to Discord" button
- Coupon window: jump straight to our Discord coupon channel
- Improved save & sync stability