Prince Laharl awakens to find his father, King Krichevskoy, dead, and his throne being stolen from him. Now the prince must battle his way through a magical realm filled with countless demons to take back his rule of the Netherworld.

Played in an isometric turn-based style similar to Final Fantasy Tactics, Afternoon of Darkness is an enhanced remake of the PS2 game, Disgaea: Hour of Darkness. It features additional optional bosses and the ability to play an alternate story campaign as Etna had she succeeded in killing Prince Laharl. A new multiplayer mode has been added to the US version and the Japanese re-release called Makai Senki Disgaea: Tsūshin Taisen Hajimemashita.