Spyro wakes up late one night to discover that his rescued friend, Cynder, is running away from the temple where they live. Spyro (and reluctantly, his friend Sparx) chase after her. Little do they know that they are in for another adventure, where they will meet the mysterious Chronicler and eventually face off against Gaul, the Ape King.

The Legend of Spyro: The Eternal Night is a 3D action platformer which takes place right after the events at the end of The Legend of Spyro: A New Beginning. Players control Spyro as he searches for his friend Cynder. Initially, he has lost all of his different breath powers from the first game, but he gradually recovers the ability to breathe fire, ice, earth and electricity. New to this game is the ability for Spyro to slow down time using his newly-learned 'Dragon Time' ability.

While the game has some basic puzzles involving pressing switches, the main focus is still around fighting. Spryo's primary attack is his headbutt, but he can also use his assorted breaths to defeat foes provided that he has enough magic power. He also earns blue gems from defeating foes which will allow him to level up his powers.