Slayers Wonderful is a role-playing video game developed by TamTam and released by Banpresto for the PlayStation in 1998 exclusively in Japan. It features key voice actors from the Slayers anime versions and a story supervised by the Slayers author Hajime Kanzaka. The game was a big commercial success but received mixed critical reception.

One day, Lina Inverse and her faithful companion Gourry Gabriev discover that Lina's most powerful spells and Gourry's magical Sword of Light no longer work. They embark on a long journey to find the cause of their sudden loss of power, reuniting with old friends and ultimately getting mixed up in a conflict much bigger than they imagined, a quest to save the world.