In Epica's home country the Netherlands, the album peaked at No. 4 making it their highest ranking album on the chart. The band stated that, "Where Retrospect reflected on the first decade of our career, we'd like to think The Quantum Enigma marks the beginning of a new era, where Epica sounds heavy, modern and without compromises! More than ever, the creation of this album was a group effort and we are extremely proud of the results! Every detail finds its way into a perfectly balanced mix, and makes Epica sound raw and overwhelming." On March 17, 2014 the first single, "The Essence of Silence" was made available as a digital download from iTunes, Amazon, Spotify, Deezer and other platforms. Three days later a lyric video was released. "Unchain Utopia" was chosen as the second single and released on April 8, 2014. In an interview with the Sonic Cathedral Webzine, lead vocalist Simone Simons confirmed that a music video for "Unchain Utopia" was set to be released soon. However, a lyric video was released instead, which features footage originally filmed for the music video. Later on the band decided to film a music video for the track "Victims of Contingency", which was released on October 30, 2014. The band returned to the stage after almost a year on 30 April 2013, in Tilburg in their home country, The Netherlands, which marked the album release show. Throughout 2014 and 2015 the band toured Europe, Asia, Africa and both South and North America in support of The Quantum Enigma. Their last venue before going back to studio took place on 22 November 2015 at the "Klokgebouw" in Eindhoven, the Netherlands, where Epica had held their Retrospect venue. The show was part of the first edition of "Epic Metal Fest", which is a festival organized and curated by the members of the band. Epica announced Epic Metal Fest on June 3, 2015 on their official website and revealed that they would be joined at the festival by bands DragonForce, Eluveitie, Fear Factory, Moonspell, Delain and Periphery. The frontwoman Simone Simons further commented: "It was a long-cherished dream of Epica to host our own festival and we are very proud to be able to present an absolute awesome array of international metal acts. This day will surely be the next highlight in our career and we hope to be able to share it with