Wo Long: Fallen Dynasty is a historical fantasy action role-playing video game developed by Team Ninja and published by Koei Tecmo.

Set during a fictionalised version of the fall of the Han Dynasty, the plot follows an unnamed protagonist who battles historical characters and Chinese mythological creatures corrupted by demonic qi.

The plot follows a nameless militia soldier who gets involved in a struggle for power and survival amid a chaotic era plagued by demonic forces.

The protagonist, initially fighting for survival against bandits and supernatural creatures, discovers a mysterious elixir that grants incredible powers. This elixir becomes the focal point of a larger conflict as various warlords, seeking to unify China, desire its power to bolster their armies and secure their dominance.

Throughout the game, the protagonist encounters historical figures and legendary warriors, forming alliances and battling formidable foes. As they uncover the secrets of the elixir, they learn about an ancient conspiracy that threatens to plunge the world into eternal darkness.

In a journey filled with intense combat and exploration, the protagonist must harness their newfound abilities, confront powerful enemies, and ultimately decide the fate of the dynasty and the future of humanity. The story intertwines personal growth, loyalty, betrayal, and the quest for power, culminating in a climactic showdown that determines the destiny of the fallen dynasty.