Immune Crisis

Immune Crisis is a tower defense game set inside the human body. Pathogens are pouring in through multiple entry points — deploy and grow your immune cells to hold the line, then bring the full power of adaptive immunity online.

It plays like a real-time strategy game and teaches like a biology class. Every unit and mechanic mirrors how your immune system actually fights infection.

DEFEND THE BODY

• Station neutrophils at the entry gates as your fast first responders
• Deploy macrophages — tough frontline walls that double as antigen-presenting cells (APCs)
• Send in NK cells and killer T cells to hunt down stronger threats
• Carry antigens to the lymph node, mature your B cells, and release waves of antibodies

LEARN REAL IMMUNOLOGY

• Innate vs. adaptive immunity, explained through play
• Antigen presentation, helper T cells, B cells, and memory cells
• Discover why overreaction (inflammation) can hurt you too

ITEMS & TACTICS

• Antibiotics, steroids, and interleukin for clutch moments
• Keep inflammation in check — too much defense backfires

MODES

• Campaign: staged missions that introduce each cell type step by step
• Endless: push your limits and chase your personal best

Earn memory cells as you play and grow stronger over time.

Play offline, no sign-up required. Made for curious minds, students, and strategy fans alike.

Optional in-app purchases available.