LISA: The Painful - Definitive Edition is the updated version of the original side-scrolling RPG set in the post-apocalyptic wasteland of Olathe. Beneath its charming facade lies a world filled with moral dilemmas. Players are forced to make choices that permanently impact gameplay, revealing their true nature. Sacrifices must be made to ensure party members' survival, whether through taking beatings, losing limbs, or enduring other inhumane tortures. Survival in this world necessitates selfishness and ruthlessness.

The Definitive Edition introduces new content and challenges, including HD graphics, campfire conversations with party members, enhanced battle systems, new border art overlays, a music player, a painless (easy) mode, and additional secrets waiting to be discovered.