This wargame simulates the struggle of human T-cells, B-cells and so on, against viruses, bacteria or tumoral cells. The battle area, with the classical hexagonal grid, is an human lymph node.The second edition contains the expansion with the HTL III (A.I.D.S.) viruses. You cannot defeat them, you can achieve victory with the 'body' army only resisting a given number of turns. - BoardGameGeek