Stephen Amell stars as Oliver, and is joined by principal cast members Emily Bett Rickards, Rick Gonzalez, Juliana Harkavy and Colton Haynes.
The episode, set primarily in the future, sees Oliver's children Mia Smoak and William Clayton venture into the Glades on a dangerous mission.
"Star City 2040" first aired in the United States on The CW on March 18, 2019, and was watched by 1.60 million viewers with a 0.3/1 share among adults aged 18 to 49.
In 2040, Oliver's son William Clayton and Mia follow Felicity's coordinates to Galaxy One headquarters, climbing the wall surrounding the Glades.
Meanwhile, Dinah Drake, Roy Harper and Zoe Ramirez discover that the terrorist organization Eden Corps, thought to be extinct, uses Galaxy One as a front, and paid the Star City Police Department to fake Felicity's death.
[5][6] Principal cast members Stephen Amell, Emily Bett Rickards, Rick Gonzalez, Juliana Harkavy and Colton Haynes reprise their roles as Oliver Queen,[7] Felicity Smoak,[5] Rene Ramirez,[4] Dinah Drake and Roy Harper.
[5] The guest cast for the season includes Katherine McNamara as Mia Smoak,[5] Katrina Law as Nyssa al Ghul,[8] Ben Lewis as William Clayton,[5] Andrea Sixtos as Zoe Ramirez,[5] Joseph David-Jones as Connor Hawke,[7] and Raj Paul as Keven Dale.
The critics consensus reads, " "Star City 2040" takes Arrow back to the future and stays there in a twisty adventure that avoids feeling like a wheel-spinning tangent and instead succeeds as a nifty summation of the season's themes.
"[8] Jesse Schedeen of IGN rated the episode 6.3 out of 10, saying, "This is a story burdened by too many superfluous characters and an antagonist that recycles the usual tropes.