Two thieves have robbed a jewellery store, taking the famous Blue Heart and receive additional bonuses in the form of Wild Diamonds, Free Spins, and a. Play Blue Heart Progressive slots by Euro Games Technology online. This free slot features: 5 reels, Free Spins, Scatter Symbols, Wild symbols. This Free Blue Heart online slot requires the players to set the wager first. The minimum and maximum coin value in this slot machine game is 1.