The NPC castaways react to their near-death experience in different ways, and if the PCs don't bolster their morale, they could easily fall prey to despair. Although the shock of the wreck is enough to mute their personalities initially, clashes amongst the NPCs could occur as early as the first night.
Morale has five categories: hopeful, normal, shaken, frightened, and panicked. Events can adjust each castaway's morale in one direction or the other.
Adjusting Morale: Every morning, an NPC castaway will make a DC 15 Will save. If successful, the NPC's morale will change one step towards hopeful. If the save fails, it will switch one step towards panicked. If an NPC reaches hopeful, he will no longer need to make these saves, but special events can still move his morale downwards.
Effects of Morale: Each level of morale has a different effect on the NPCs:
Hopeful: The NPC functions normally, and does not need to make Will saves to adjust morale. Diplomacy checks to improve the NPC's attitude receive a +2 bonus.
Normal: The NPC functions normally.
Shaken: The NPC is shaken.
Frightened: The NPC is shaken. Diplomacy checks to improve the NPC's attitude receive a -2 bonus.
Panicked: The NPC is shaken, and during any attack by hostile forces, she immediately becomes panicked and flees the area, heedless of danger. Diplomacy checks to improve the NPC's attitude receive a -4 bonus.