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Tap/click the bloodstream to start · Protect the body from infection pressure
Infection1
Defense0
Best0
Run0/10
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Data0

Cell Defense Run

Top 3 players for this mission. Press OK to start your run.

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Top 3 Players
#1 🌶️ Hankook 7387 2026-06-23 07:56:25
#2 🔥 NoStress 4484 2026-07-01 22:21:43
#3 🍢 Bradley 1794 2026-06-08 23:54:34

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Please switch back to Portrait mode to defend the bloodstream.

Mission Report

You finished 10 defense runs. Best response is shown below.
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Cell Defense Run - Playable Bio Science Mission

Play Free Bio Science Defense Game

Cell Defense Run is a mobile-friendly browser game where players guide a Bio Defender through the bloodstream, avoid viruses and mutation variants, collect research data, and activate antibody shields.