static void Main(string[] args) { var foo = new bool[5, 5]; foo[0, 0] = true; foo[0, 1] = false; foo[0, 2] = false; foo[0, 3] = false; foo[0, 4] = false; foo[1, 0] = false; foo[1, 1] = true; foo[1, 2] = false; foo[1, 3] = true; foo[1, 4] = false; foo[2, 0] = false; foo[2, 1] = true; foo[2, 2] = true; foo[2, 3] = false; foo[2, 4] = false; foo[3, 0] = false; foo[3, 1] = true; foo[3, 2] = false; foo[3, 3] = true; foo[3, 4] = false; foo[4, 0] = false; foo[4, 1] = false; foo[4, 2] = false; foo[4, 3] = false; foo[4, 4] = true; Zombies game = new Zombies(); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); game.ZombiesAttack(5, 5, ref foo); }