RTG casino slots online free are evermore exciting and bright. Online casino slots by RTG have many interesting game features. By the way, the free slot games with bonus features by this developer are available at Slotopus. Diamond Dozen free slot machine game is a progressive slot. The symbols of the game are White and Blue Diamonds, Blonde Lady, Gentleman with charming smile, Red Rose, Gold Ring, letters and numbers. The Diamond Dozen slot is a slot free spins. The Scatter Blue Diamonds trigger the free spins feature when three and more of them appear. The wins are doubled during the free spins and more white and blue diamonds are added. It's a game played on 5 reels with a 243 ways-to-win betting format. Instead of regular win lines, payouts are awarded by simply matching symbols on adjacent reels. There are four low-paying symbols in the Vicky Ventura slot machine. The poker symbols of clubs, diamonds, hearts, and spades all pay 0.2x to 1.5x your stake if you match 3, 4, or 5 on adjacent reels. One of the most successful slot machine games to have been designed by IGT is Da Vinci Diamonds slots. The game is among the most popular and widely played ones across online and land-based casinos. In fact, the game has become so popular that the Da Vinci Diamonds Dual Play slot machine was just released as the first sequel in this series of slots. Based on Leonardo Da Vinci’s art works and gemstones, Da Vinci Diamonds has the feature of Tumbling Reels which allows you to increase your winnings to a significant effect. With five reels and twenty paylines, Da Vinci Diamonds allows players to make real money bets in three different currencies – the Euro, the Pound and the Dollar. Multi Diamonds sticks to a classic gameplay as well to ensure an easy start for all players, regardless of their level of experience with video slot games. You will play on five spinning reels, with three symbols on each at the end of every turn. In addition, the gameplay features only five paylines to bet on, which limits your options but is also very characteristic of classic slot games. To win, you must land symbol combinations on one or several paylines.