Skelattack is an action platformer where players control Skully, a newly deceased skeleton. Accompanied by the bat companion Imber, players jump, slash, and flap through the Underworld. Confront a human threat that has kidnapped the elder skeleton Elzedon and plunders the Blue Flame, the magic kindling the spirits of the dead.

The game emphasizes versatile and fluid platforming, enabling precise movement through its environments. A visually rich art style defines the Underworld setting. An extensive checkpoint system, utilizing Blue Flames, facilitates progression and jump practice. This action platformer blends responsive movement with combat against an invading human force.