Item from Hades by Supergiant Games
Raw power harvested from the Underworld itself — collected in every run and spent at the Mirror of Night to make Zagreus permanently stronger.
Darkness is the primary meta-progression currency. Every enemy, every boss, every trove drops it. It accumulates. At the Mirror of Night, it transforms into permanent improvements — more Dashes, more Death Defiances, better damage under specific conditions. The first time Zagreus dies, he comes back with nothing. The second time, he comes back with the upgrades purchased from the first death's harvest. By the hundredth time, he is someone the first Zagreus couldn't have imagined. This is what Nyx understood when she gave him the Mirror. Death is instruction. Darkness is the lesson made material.
A glimmering dark substance — collected as shards of shadow, pooled in corners of combat rooms, dropped by every boss. It looks like the Underworld distilled into something usable.
Also known as: Dark Essence, Darkness