release the Original Series on Blu-ray. Season one, two, and three were released on April 28, September 22, and December 15, respectively. The Blu-ray releases let the user choose between "Enhanced Effects" or "Original Effects" via a technique called multi-angle. All 79 episodes of the series have been digitally remastered by CBS Home Entertainment (distributed by Paramount) and have since been released on DVD. CBS Home Entertainment released season one of The Original Series on Blu-ray on April 28, 2009. The Blu-ray release contains both Original and Remastered episodes by seamless branching. {|class="wikitable" |- ! Blu-ray name ! Ep # ! Discs ! Region 1/A (USA) ! Region 2/B (UK) ! Region 4/B (Australia) ! Blu-ray special features |- | Season One | style="text-align:center;" | 29 | 7 | April 28, 2009 | April 27, 2009 | May 6, 2009 | Starfleet Access for "Where No Man Has Gone Before" Spacelift: Transporting Trek Into the 21st Century Starfleet Access for "The Menagerie, Parts I and II" Reflections on Spock Starfleet Access for "The Balance of Terror" Life Beyond Trek: William Shatner To Boldly Go... Season One The Birth of a Timeless Legacy Starfleet Access for "Space Seed" Sci-Fi Visionaries Interactive Enterprise Inspection Billy Blackburn's Treasure Chest: Rare Home Movies and Special Memories Kiss 'n' Tell: Romance in the 23rd Century Starfleet Access for "Errand of Mercy" |- | Season Two | style="text-align:center;" | 26 | 7 | September 22, 2009 | October 9, 2009 | October 1, 2009 | Billy Blackburn's Treasure Chest: Rare Home Movies and Special Memories Part 2 Starfleet Access for "Amok Time" "Content to Go" featurette via Mobile-Blu: Writing Spock "Content to Go" featurette via Mobile-Blu: Creating Chekov "Content to Go" featurette via Mobile-Blu: Listening to the Actors "More Tribbles, More Troubles" audio commentary by David Gerrold DS9: "Trials and Tribble-ations" "Trials and Tribble-ations": Uniting Two Legends Star Trek: The Original Series on Blu-ray "Trials and Tribble-ations": An Historic Endeavor Starfleet Access for "The Trouble with Tribbles" "Content to Go" featurette via Mobile-Blu: Spock's Mother To Boldly Go... Season Two Designing the Final Frontier Star Treks Favorite Moments Writer's Notebook: D.C. Fontana Life Beyond Trek: Leonard Nimoy Kirk, Spock & Bones: Star Treks Great Trio Star Trek'''s Divine Diva: Nichelle Nichols Enhanced Visual Effects Credits |- | Season Three | style="text-align:center;" | 24 | 6 | December 15, 2009 | March 22, 2010 | May 1,