Guardian's Crusade, known in Japan as Knight & Baby, is a 1998 role-playing video game (RPG) for the PlayStation, developed by Tamsoft and released worldwide by Activision. The game revolves around a warrior named Knight, his fairy friend Nehani, and a pink creature named Baby that the player raises and feeds like a virtual pet. The gameplay is that of a standard turn based RPG with non-random encounters. Guardian's Crusade did not enjoy commercial success but received positive reviews.

The Golden Tower... a majestic symbol of hope to the world. But behind its walls lurks a being that could destroy all. Evil forces are already in motion as the Tower cries out for a hero.

Now destiny calls on you – a young knight charged with the care of a magical baby creature of mysterious origins. Prepare to face fantastic foes in a quest that leads to the cradle of all evil.