Travel back to the Stone Age in Rock Vegas, a prehistoric adventure slot set on a 5x3 grid with 20 fixed paylines, featuring cave people and dinosaurs. The core gameplay revolves around the Mega Hold & Spin feature, triggered by landing three or more bonus symbols. During this bonus, players collect rock symbols, each displaying a multiplier value, on a unique grid. These rocks can cluster together, forming larger blocks that combine their multipliers for colossal wins. Mystery multipliers and keys appear, unlocking a special rock trail that leads to even greater multiplier boosts, ensuring an exciting and highly volatile journey back in time for huge payouts.