Season 1
7.5/103,765 votesTurning Point
Season 1 Episode 1 - Aired 4/6/2011
A self-described mad scientist attends a lecture on time travel, stumbles upon the dead body of a familiarly unfamiliar woman, and discovers that his text messages are no longer bound by the rules of space and time.
Director: Kazuhiro Ozawa
Writer: Jukki Hanada
7.5/103,288 votesTime Travel Paranoia
Season 1 Episode 2 - Aired 4/13/2011
Okabe is surprised to see Makise up and about after she was killed.
Director: Shigetaka Ikeda
Writer: Jukki Hanada
7.6/103,149 votesParallel World Paranoia
Season 1 Episode 3 - Aired 4/20/2011
Okabe suspects his microwave oven is behind the recent unusual events.
Director: Kanji Wakabayashi
Writer: Jukki Hanada
7.2/103,063 votesInterpreter Rendezvous
Season 1 Episode 4 - Aired 4/27/2011
Okabe needs to find a very old computer to hack a very new tech.
Director: Kazuhiro Ozawa
Writer: Jukki Hanada
8.0/103,041 votesStarmine Rendezvous
Season 1 Episode 5 - Aired 5/4/2011
A successful hack reveals SERN's big secret.
Director: Shigetaka Ikeda
Writer: Jukki Hanada
7.6/102,954 votesButterfly Effect's Divergence
Season 1 Episode 6 - Aired 5/11/2011
Okabe's small scale experiment is partially successful.
Director: Tomoko Hiramuki
Writer: Masahiro Yokotani
8.3/103,017 votesDivergence Singularity
Season 1 Episode 7 - Aired 5/18/2011
Okabe takes his experimentation to the next level by texting the winning lotto numbers back in time, but he fails to consider how his actions might alter the present - or the future.
Director: Hisato Shimoda
Writer: Toshizo Nemoto
8.0/102,888 votesChaos Theory Homeostasis I
Season 1 Episode 8 - Aired 5/25/2011
The latest experiment for Okabe and his lab mates leads to the disappearance of one of their own. Next, they'll attempt to use their time travel technology to make a young boy's dream a reality.
Director: Kanji Wakabayashi
Writer: Toshizo Nemoto
8.3/102,956 votesChaos Theory Homeostasis II
Season 1 Episode 9 - Aired 6/1/2011
Okabe grows concerned over the drastic changes his experimentation is causing, and the IBN-5100 disappears from the lab. The only hope for finding a replacement rests upon the delicate shoulders of Feyris the cat girl.
Director: Tomoki Kobayashi
Writer: Jukki Hanada
7.9/102,876 votesChaos Theory Homeostasis III
Season 1 Episode 10 - Aired 6/8/2011
The part-time warrior from downstairs tells Okabe about the search for her missing father. Meanwhile, the aspiring mad scientist is troubled by a mysterious text message.
Director: Kazuhiro Ozawa
Writer: Masahiro Yokotani
8.3/102,931 votesDogma in Event Horizon
Season 1 Episode 11 - Aired 6/15/2011
As the lab members prepare to transport human memories by way of a Time Leap, Okabe receives some highly disturbing news: Makise may be a SERN spy!
Director: Koji Kobayashi
Writer: Jukki Hanada
9.3/104,121 votesDogma in Ergosphere
Season 1 Episode 12 - Aired 6/22/2011
Tension builds at the Lab when Makise and Suzuha both show up for the party, but that's just the beginning. As the night draws to a close, armed thugs - led by a familiar face - come looking for the time machine.
Director: Yuzuru Tachikawa
Writer: Jukki Hanada
9.2/103,682 votesMetaphysics Necrosis
Season 1 Episode 13 - Aired 6/29/2011
Okabe, desperate to prevent the tragedy he's already seen happen, summons the courage for a daring and risky Time Leap. Can he save the life of his oldest and dearest companion?
Director: Hisato Shimoda
Writer: Jukki Hanada
9.2/103,545 votesPhysically Necrosis
Season 1 Episode 14 - Aired 7/6/2011
Despite his many attempts, Okabe is unable to prevent the death of Mayuri, so he turns to Makise for help solving the riddle of time travel. Later, Suzuha's true identity is revealed
Director: Kanji Wakabayashi
Writer: Jukki Hanada
8.4/102,930 votesMissing Link Necrosis
Season 1 Episode 15 - Aired 7/13/2011
Suzuha reveals the orgins of SERN's future totalitarianism. While she continues her work to destroy the organization, Okabe and Mayuri continue the search for Suzuha's father.
Director: Tomoki Kobayashi
Writer: Masahiro Yokotani
9.4/103,866 votesSacrificial Necrosis
Season 1 Episode 16 - Aired 7/20/2011
The truth about Suzuha's father is finally revealed. Okabe realizes the devastating consequences of stopping her from leaving the night of the party.
Director: Tomoko Hiramuki
Writer: Masahiro Yokotani
8.4/102,936 votesMade in Complex
Season 1 Episode 17 - Aired 7/27/2011
After the change in divergence fails to have a lasting effect, Okabe and Kurisu set out to further manipulate time in the hopes of gaining an IBN 5100.
Director: Koji Kobayashi
Writer: Toshizo Nemoto
8.0/102,930 votesFractal Androgynous
Season 1 Episode 18 - Aired 8/3/2011
In a further attempt to rescue Mayuri from her fate, Okabe reveals Ruka's past to her. Ruka must make a difficult decision that might change her entire life.
Director: Kazuhiro Ozawa
Writer: Masahiro Yokotani
8.7/103,094 votesEndless Apoptosis
Season 1 Episode 19 - Aired 8/10/2011
Okabe must make a time leap in order to save Moeka from herself. He realizes that all is not what it seems as Moeka's shady behavior leads him closer to the IBN 5100.
Director: Hiroyuki Tsuchiya
Writer: Toshizo Nemoto
9.2/103,547 votesFinalize Apoptosis
Season 1 Episode 20 - Aired 8/17/2011
With the help of Kurisu and Moeka, Okabe attempts to get closer to the IBN 5100 and the mysterious FB. As he closes in on SERN's network, he realizes that the path to victory will not be without additional sacrifice.
Director: Yoshito Mikamo
Writer: Toshizo Nemoto
8.9/103,266 votesParadox Meltdown
Season 1 Episode 21 - Aired 8/24/2011
With his new discovery in mind, Okabe continues his attempts to protect Mayuri while also trying to avoid Kurisu's potential impending fate.
Director: Kanji Wakabayashi
Writer: Jukki Hanada
9.7/105,754 votesBeing Meltdown
Season 1 Episode 22 - Aired 8/31/2011
In order to continue his work against SERN, Okabe must finally choose between saving Kurisu or Mayuri.
Director: Tomoki Kobayashi
Writer: Jukki Hanada
9.5/104,358 votesOpen the Steins Gate
Season 1 Episode 23 - Aired 9/7/2011
Tasked with preventing an impending World War III by an alternate Suzuha, Okabe finds himself playing an active part in Kurisu's death.
Director: Kazuhiro Ozawa
Writer: Jukki Hanada
9.7/105,623 votesAchievement Point
Season 1 Episode 24 - Aired 9/14/2011
Okabe has one final chance to travel back in time, set everything right, and save the girl he never even got to love. His mission is vital, but it may mean the end for the mad scientist.
Director: Hiroshi Hamasaki, Koji Kobayashi
Writer: Jukki Hanada