He got the Grand among six Cash Boost symbols, which triggers six free spins with the ladder feature. The Cash Boost trigger is where VLR got his Grand jackpot. Betting higher increases your odds proportionally.
The game is a multi-denomination, all ways pays game that features progressives that can be won at any bet level. This time out, he lands the Grand jackpot on a new series of games from Aristocrat called Cash Boost, which features a ladder during the free spins with a prize that increases with every free spin win, and is shown in the video.
