Track D2 is a bonus track.
It's the [url=https://www.discogs.com/release/23603435]silver vinyl edition[/url] with slipmat and patch, limited to 100 copies.
Their first three albums were fine power metal efforts, but some of it went a little over the top into cartoony euro-metal territory. With Invaders they've dialed back some of the goofiness and brought a little more of a proggy dark edge to the music.