sentences:  As the series continued, Global VR provided operators with new software on compact discs (to be installed on the computer's hard drive) featuring the latest edition of PGA Tour Golf.The hardware demands for each new edition increased and Global VR provided a computer upgrade option; the superior black ‘Everlast’ computer.Many operators passed on spending on hardware upgrades so subsequent editions of the series may have seen noticeable lag in gameplay as a result.