Hydra was released on 31st January 2014. via BMG in Europe, 4th February 2014. via Nuclear Blast USA in USA. Album is available in standard edition, mediabook with bonus CD and box set.
Standard
CD
1. Let Us Burn
2. Dangerous (Feat. Howard Jones)
3. And We Run (Feat. Xibit)
4. Paradise (What About Us?) (Feat. Tarja)
5. Edge Of The World
6. Silver Moonlight
7. Covered By Roses
8. Dog Days
9. Tell Me Why
10. Whole World Is Watching (Feat. Dave Pirner)
Mediabook
Standard CD + Bonus CD
Bonus CD:
1. Radioactive
2. Summertime Sadness
3. Let Her Go
4. Dirty Dancer
5. And We Run (Evolution Track)
6. Silver Moonlight (Evolution Track)
7. Covered By Roses (Evolution Track)
8. Tell Me Why (Evolution Track)
Deluxe Boxset Limited Edition
Mediabook with 100 pages + Standard CD Instrumental Version + Double Black Vinyl
Standard in Gatefold + Hydra Songbook + Hydra/Within Temptation Guitarpick
Standard Poland
Polish edition features Piotr Rogucki on the Whole World Is Watching instead of Dave Pirner