Threshold released the following albums including Critical Mass (2004) and Dead Reckoning (2007).
- Slipstream
- This Is Your Life
- Elusive
- Hollow
- Pilot in the Sky of Dreams
- Fighting for Breath
- Disappear
- Safe to Fly
- One Degree Down
- Supermassive Black Hole
Songs
- Angels
- Change
- Clear
- Consume To Live
- Do Unto Them
- Exposed
- Freaks
- Intervention
- Goodbye Mother Earth
- He Is I Am
- Keep It With Mine
- Lake Of Despond
- Mission Profile
- Light And Space
- Lost
- Mother Earth
- New Beginning
- Paradox
- Pressure
- Sanity's End
- Sheltering Sky
- Static
- Stop Dead
- Sunseeker
- Surface To Air
- The Destruction Of Words
- Turn On Tune In
- Virtual Isolation
- Voyager II
- Will To Give
- The Whispering
- Babylon Rising
- Part Of The Chaos
- A Tension Of Souls
- Sunrise On Mars
- Oceanbound
- Narcissus
- Into The Light
- Days Of Dearth
- The Ravages Of Time
- Opium
- Life's Too Good
- Eat The Unicorn
- Flags And Footprints
- The Art Of Reason
- Lovelorn
- Ground Control
- Siege Of Baghdad
- The Latent Gene
- Innocent
- Forever
- Devoted
- Life Flow
- Under The Sun
- Long Way Home
- Keep My Head
- Somatography