Tranquillity, Death Angel, Dew-Scented, Diablo, Dio, Dismember, Drive, Ensiferum, Fear Factory, In Flames, Impaled Nazarene, Kilpi, Kotiteollisuus, Nasum, Nightwish, Machine Men, Mokoma, Sinergy, Soilwork, Sonata Arctica, Suburban Tribe, Swallow the Sun, Timo Rautiainen & Trio Niskalaukaus, Turisas, Twilightning and others 2005 Audience (a combined three day total): 33 000+ (sold out) Accept, Ajattara, Amoral, Apocalyptica, Callisto, Children of Bodom, Deathchain, Destruction, Dimmu Borgir, Evergrey, Finntroll, Gamma Ray, Hieronymus Bosch, Lake of Tears, Mnemic, Monster Magnet, Naglfar, Pain Confessor, Paska, Primal Fear, Rotten Sound, Scarve, Sentenced, Skyclad, Stam1na, Teräsbetoni, Testament, Thunderstone, Turmion Kätilöt, Viikate, Wintersun and others 2006 Audience (a combined three day total): ca. 33 000 Amorphis, Anathema, Arch Enemy, Burst, Celtic Frost, Deathstars, Diablo, Epica, Freedom Call, Gojira, Impaled Nazarene, Kalmah, Mendeed, Metsatöll, Mokoma, Nine, Norther, Opeth, Pain Confessor, Sodom, Sonata Arctica, Stam1na, Suburban Tribe, Swallow the Sun, Tarot, The Scourger, The Sisters Of Mercy, Timo Rautiainen, Venom, Verjnuarmu, Wintersun 2007 Audience (a combined three day total): ca. 33 000 Before the Dawn, Blind Guardian, Brother Firetribe, Children of Bodom, D'espairsRay, DragonForce, Emperor, Finntroll, Hatesphere, Immortal, Imperia, Insomnium, Isis, Katatonia, Legion of the Damned, Maj Karma, Mercenary, Misery Index, Moonsorrow, Moonspell, Naildown, Pain, Profane Omen, Stratovarius, Sturm Und Drang, Thunderstone, Turisas, Vader, W.A.S.P. and others 2008 Audience (a combined three day total): 36 000 (sold out) Amon Amarth, Before the Dawn, Behemoth, Carcass, Diablo, Dimmu Borgir, Dream Evil, Dying Fetus, Entombed, Fields of the Nephilim, Ghost Brigade, Kalmah, Killswitch Engage, Kiuas, Kreator, KYPCK, Mokoma, Morbid Angel, Nile, Primordial, Shade Empire, Slayer, Sonata Arctica, Sotajumala, Stam1na, The Scourger, The Sorrow, Tracedawn and Týr and others 2009 Audience (a combined three day total): ca. 28 000 All That Remains, Amoral, Amorphis, The Black Dahlia Murder, Callisto, Dauntless, Deathchain, Eluveitie, Ensiferum, Evile, Firewind, Gama Bomb, Girugamesh, Gojira, Immortal, Jon Oliva's Pain, Legion of the Damned, Mucc, My Dying Bride, Neurosis, Parkway Drive, Pestilence, Profane Omen, Rotten Sound, Sabaton, Stam1na, Suicidal Tendencies, The Faceless, Volbeat and others 2010 Audience (a combined three day total): 33 000+ (sold out). Amatory, Barren Earth, Bloodbath, Cannibal Corpse, Devin Townsend, Devin Townsend Project, Finntroll, Holy Grail, Hypocrisy, Insomnium, Kamelot, Megadeth, Nevermore, Nile, Obituary, Overkill, Pain, Rytmihäiriö, Satyricon, Sotajumala, Swallow The Sun, Tarot, Testament, Torture Killer, Trigger The Bloodshed, Warmen, W.A.S.P., Crowbar 2011 Audience (a combined three day total): 35 000+ Amon Amarth, Amorphis, At the Gates, Arch Enemy, Blind Guardian, The Devin Townsend Project, Epica, Exodus, Forbidden,