Nightmare Creatures is an action game released in 1997 by Activision Publishing. The game was released for PC (Windows), N64 and PlayStation.
It is 1834. Adam Crowley, once a respected scientist, now practicing black magic, a madman liberated demonic plague on the streets of London. Plague mutates people into grotesque mutants that brutally murder innocent residents of the capital. The only salvation is Ignatius Blackward - a priest and occult expert and his daughter Nadia, a biologist and gimnasytczka. Playing as one of these characters, fighting mutants - you have to find Adam Crowley and restore normality to the streets of London.