Pathogens are attacking your body, lead a variety of cells to defend and protect your body's cells. Defensive cells can be purchased using energy, which are slowly generated based on how many non-defensive cells there are. Pathogens will multiply and reproduce when they make contact with your body's cells and when all of your cells are destroyed, you loose the game. Only a certain number of pathogens will invade, when all of them have been defeated, you win the game. Here is an overview of the functions of the various cells: 1. Neutrophil - Cheap fast cells which attack pathogens and can die randomly, leaving a cloud of toxins which last for 10 seconds, killing pathogens. 2. Macrophage - Slower but longer lasting cells which kill up to 10 pathogens before being overloaded. 3. B Lymphocyte - Cells which produce antibodies against the virus. 4. Virgin T Cell - Cells activated by B lymphocytes and automatically reproduce and destroy pathogens. 5. Natural Killer Cell - A medium speed cell which slowly kill pathogens. 6. Basophil - Produces extra energy for more cells DISCLAIMER: THIS IS HEAVELY SIMPLIFIED
I give credit to someguysomewhere Credit to Kurzgesagt for the art