Wishmaster reached Gold status within 2 hours of its release in Finland.
The song "The Kinslayer" is about the Columbine High School massacre.
"Nightwish" was a name of a song on the band's first demo. Soon after the band decided to call the band by the same name.
Back in 1997, the band was meant to simply be 'mood music' as Tuomas describes. The introduction of Tarja was a complete surprise, as they didnt realise how dramatic and operatic her voice was. Eventually they had to move away from this 'mood music' style to incorporate her vocal technique so it fit together to become the flamboyant band they were back in the early days.
One of Nightwish's singles is called Nemo, and the funny thing about this is that Tuomas is a huge fanatic of Disney animation and he loves Disneyworld in Florida, USA. Nightwish has played some shows there at the Blues Club, and at that time, the Disney movie "Finding Nemo" was in theaters, and people thought that Nightwish did the song Nemo because of the movie. This has caused confusion among people and fans when the truth is Nemo is Latin for "nobody." At Nightwish live shows, it's been known for people to throw the Nemo fish character plush doll on stage to the band!
At Tuomas's request, the band has agreed that the song "Ocean Soul" will never be played live. Tuomas says it is because it is a very personal song to him.
Two Nightwish songs were used for big-production movies:

- Planet Hell in The Ring of the Nibelungs (2004, TV) - with some big actors in it.

- I Wish I Had An Angel in Alone in the Dark (2005) - based on the cult PC game, with Christian Slater and Stephen Dorff. Film director Uwe Boll also shot the music video for the song.