In Nightmare Creatures II, players navigate through a dark and atmospheric world, utilizing a combination of combat and exploration to survive against various monstrous foes. The game features a mix of melee and ranged attacks, allowing players to choose their approach to combat.

The storyline of Nightmare Creatures II follows the protagonist, a character named Ignatius, as he battles against the forces of evil unleashed by the sinister alchemist, Adam Crowley. Players must uncover the mysteries surrounding Crowley and his monstrous creations while navigating through a series of haunting environments.

Nightmare Creatures II stands out with its unique blend of gothic horror aesthetics and a diverse array of enemies, as well as its cooperative multiplayer mode, which allows players to team up and face the horrors together.