Jump! transports players to a vibrant, retro arcade world where classic fruit machine symbols meet dynamic expanding reels. The game begins on a compact 3x3 grid, featuring traditional symbols like cherries, bells, plums, and lucky sevens. Landing winning combinations expands the grid with consecutive respins, potentially reaching a large 6x4 layout and activating progressive multipliers. The friendly frog wild symbol substitutes for all others, significantly boosting winning potential as the reels expand and multipliers climb.