A video lottery terminal or VLT is a gaming machine that allows gamblers to bet on the outcome of a video game. VLT at Scioto Downs, Columbus, Ohio. A VLT is similar to a slot machine, in that each terminal is a stand-alone Canada · United States · Non-lottery · Class III video lottery. It may look like a regular slot machine and play like one, but a video lottery terminal differs quite a bit in terms of how winners are determined. How slot machines compare to Video Lottery Terminals (VLT's, VGM's) and the slot machine payouts in NY. Slot machines vs Video Lottery.