Play for free the Heartburst slot machine from Eyecon software or choose the best online casinos with Heartburst available in your country. . Legacy of the Wild 2. Play for free the Heartburst slot machine from Eyecon software or choose the best online casinos with Heartburst available in your country. Originally launched in , Casino has come a long way when it comes to providing online casino games. Heartburst is a five reel slot with four rows and up to one hundred paylines; the design is simple but pleasing to the eye with those bright. Legacy of the Wild 2. Heartburst. The games at the site are powered by Random Logic. Heartburst is a five reel slot with four rows and up to one hundred paylines; the design is simple but pleasing to the eye with those bright. Heartburst is a 5-reel, line online slot game with bonus spins, instant play, autoplay, video slots, multiplier, wild symbol, scatter symbol. Heartburst.