"As Long as I Fall", the first single, was released in early September and only available via download (save for Japan, where it was released on CD). The video for the song is available at their official site. Helloween teamed up with Kai Hansen's current band Gamma Ray for their 2007–2008 "Hellish Rock" world tour, which started in early November 2007. Helloween were headlining and Gamma Ray were labeled as the "very special guest" with most shows also having fellow German "guest" Axxis. The tour went through Europe, Asia, and South America, as well as a few dates in the US. The tour is notable for Kai Hansen stepping on stage with his former band fellows Weikath and Grosskopf to perform hits "I Want Out" and "Future World" in the last encore segment of Helloween. On 26 December 2009, Helloween released the "Unarmed – Best of 25th Anniversary" album in Japan. The album was released on 1 February 2010 in Europe. The album is a compilation of ten of the band's best known songs, re-recorded in different musical styles than the original recordings and by the current lineup. It features a seventeen-minute "Keepers Medley", recorded by a seventy-piece orchestra from Prague, mixing together "Halloween", "The Keeper of the Seven Keys", and "The King for a 1000 Years". There is a limited edition digipak, including a thirty-minute "making of"-DVD with interviews and studio footage. The band's website states that the album was released on 13 April 2010 in North America via Sony & THE END RECORDS labels. On 14 May 2010, it was announced on their site that they were working on a new studio album, which was the fastest and heaviest effort in years. Helloween released their thirteenth studio album, "7 Sinners", on 31 October in Europe and 3 November in the US. Before its physical release, the band made it available worldwide for streaming via their Myspace page. The name of the album alludes to the seven deadly sins. According to Andi Deris, the album goes straight to the point: "After an acoustic album, we needed definitely something that shows the people without any question that this is a metal album." The band toured to promote the new album with Stratovarius and Pink Cream 69 as their guests. On 5 April 2011, via the band's website, it was announced that "7 Sinners" was awarded 'Gold status' in the Czech Republic.