A damaged cell is under constant threat from bacteria approaching from several directions. Your task is to protect it while the repair process continues. Create white blood cells around the target, position them against the incoming bacteria and prevent the attackers from reaching the vulnerable cell.
Your supply of white blood cells is limited, so every defensive decision matters. Watch the different directions of attack, decide where protection is needed most and use the available cells carefully. Reaching the end of the repair time without losing the damaged cell completes the level.
The game contains ten levels that gradually increase in difficulty. Each new stage puts greater pressure on your defense and demands more careful use of the same core strategy. Keep the bacteria away, preserve the damaged cell, and hold your position until its restoration is complete.
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