The album was certified gold in the US by the RIAA, with sales of over 500,000 copies, on April 21, 2003, almost nineteen years after its initial release.
"Follow Your Heart" was the band's highest charting single of the time, reaching #88 in both the UK and the US. "Spellbound" was also released as a single, though it didn't prove as successful, only charting in Canada and barely scraping the top 100.
Thunder Seven was the last Triumph album that did not feature any outside writers. All prior Triumph albums, with the exception of 1977's Rock and Roll Machine, were written entirely by the band members.
The album cover was illustrated by artist Dean Motter and was a mechanized version of the Vitruvian Man by Leonardo da Vinci. The cover is a visible element of the album's concept, in which the band examines the actions and abnormalities of man at the turn of the 21st century.