An illuminable ramp assembly for a pinball game having a playfield supporting a rolling ball thereon comprises an elongated molded plastic housing and a bal! ramp extending alongside the housing. The housing encloses a power supply, a gas tube, protective end caps, and cushioning supports. The gas tube is powered by the power supply. To effectively suspend the gas tube within the housing and, at the same time, provide the gas tube with shock resistance, the protective end caps are mounted over opposing ends of the gas tube, and the cushioning supports are intermittently located along the length of the gas tube. The cushioning supports partially encompass the gas tube and are interposed between the gas tube and the housing. The ball ramp includes an entry end and an exit end. A switch capable of detecting the presence of the rolling ball is preferably located near the entry end of the ball ramp. In response to the rolling ball being delivered to the ball ramp via its entry end such that the rolling ball actuates the switch, a game controller causes the power supply to illuminate the gas tube with an illumination pattern.