The darkness is no mere absence of light—it is a malevolent entity born from humanity's deepest fears, or perhaps the collective weight of damned souls pressing against the living world. Its origin is unknown, but its weakness is clear: light and fire hold it at bay. Players must fortify their position against tidal waves of Nightmares—enemy legions that claw up from fissures in the earth to reinforce a living curtain of darkness called the Veil, rendered through SwarmTech technology capable of placing over 70,000 individual units on screen at once.