Season One of Defiance was presented by the SyFy channel in 2013. The season premiered with the Pilot on April 15, 2013. Marketing before the premiere included release of the first fourteen minutes of the episode to the general public on line. Gamers who had registered as "ark hunters" were able to view the entire episode early.
- Pilot Season 1, Episode 1
- Down in the Ground Where the Dead Men Go Season 1, Episode 2
- The Devil in the Dark Season 1, Episode 3
- A Well Respected Man Season 1, Episode 4
- The Serpent's Egg Season 1, Episode 5
- Brothers in Arms Season 1, Episode 6
- Goodbye Blue Sky Season 1, Episode 7
- I Just Wasn't Made for These Times Season 1, Episode 8
- If I Ever Leave This World Alive Season 1, Episode 9
- The Bride Wore Black Season 1, Episode 10
- Past Is Prologue Season 1, Episode 11
- Everything Is Broken Season 1, Episode 12[1]