• Awesome Music: Sky Clad Observer, which sung by Itou Kanako, is already awesome as it is for pc version opening, but when it is played when Hououin speak to his future self in episode 23 add awesomeness to this scene.
  • Big-Lipped Alligator Moment: An insanely sleazy one, as Okabe seems to inexplicably completely forget about the entire attempt by Ruka to change her gender, leading to him sexually assaulting her in front of everyone. And then once the scene has passed, without any apparent explanation from him, not a single one of them holds it against him in the slightest.
  • Cerebus Syndrome: The series starts off as reasonably light-hearted (not that it didn't have its occasional dark moments), but when episode 12 comes around and Mayuri dies, the emotional intensity is cranked Up to Eleven.
  • Chick Magnet: Rintaro, depending if you view Mayuri's, Ruka's and Feyris' feelings towards him as romantic.
  • Complete Monster: Kurisu's father, who is willing to steal his own daughter's work and then kill her to keep her quiet, all out of jealousy since he can't handle the thought of his own daughter being smarter than him.
    • Given some of the stuff said about the dystopian future, SERN seems to be this as well.
  • Fetish Fuel: The girls at May Queen. Also Ruka, an extremely Bishonen male who often wears a Miko outfit, and one time cosplayed due to Mayuri's insistence. Goes even further when he changes his gender.
  • Harsher in Hindsight: If you rewatch the series and see all those people sending D-mails, it seems much harsher since you know Okabe has to reverse them in order to save Mayuri.
    • Okabe's rants about the Organization and people being secret agents becomes much harsher once SERN is introduced and Moeka turns out to be a secret SERN agent.
  • Fridge Horror: If left alone, the Time Leap Machine can create monsters like Yandere Nae.
  • High Octane Nightmare Fuel - Jellyman report, with pictures of jellified humans who were used as experiment for time machine.
    • What about JELLIFIED MAYURI?!
    • Let's not forget the threatening email SERN sent to Okabe, complete with a picture of a severed, bloody head. All of this from a research organization too.
    • The letter written by the suicial Aname was particularly haunting. Her constantly writing "I failed" and the revelation that she became mentally unstable after 25 years of bliss are enough to induce nightmares.
  • Hilarious in Hindsight: A few weeks after ending of anime CERN published about neutrinos traveling faster than light.
  • Ho Yay: Despite him insisting otherwise, it is hinted that Ruka does have romantic feelings for Okabe, even when he was male. Okabe also sees him as a Stupid Sexy Flanders.
  • In-Series Nickname / Fan Nickname: Fairly much the entire cast:
    • Rintaro: Hououin Kyouma, Okarin
    • Mayuri: Mayushii, Tuturu[[, ChuuChuuru]]
    • Itaru: Daru, Super Haker, Super Hacker
    • Kurisu: Christina, Assistant, The Zombie, @channeller, Celeb 7, Chestnut Rice and Kamehameha, Class Rep Character.
    • Moeka: Shining Finger
    • Suzuha: Weekend Warrior/Baito Senshi, John Titor
    • Ruka: Rukako
    • Yuugo: Mr. Braun, FB
    • Nae: Small Animal
  • Les Yay: At least that how Itaru sees Mayuri showing Kurisu around.
  • Memetic Mutation: Dr. Pepper: an intellectual drink for the chosen ones! It's to Steins;Gate as Pizza Hut is to Code Geass
  • Moral Event Horizon: Moeka killing Mayuri in several timelines.
  • Rewatch Bonus: Gratuitously so. Only natural for a series about time travel of course.
  • The Scrappy: Moeka became instantly hated when she revealed she was a SERN spy and murdered Mayuri.
  • Viewer Gender Confusion - Ruka is very feminine, so much so that Mayuri asks him to try on her cosplay costumes. He also wears a Miko's traditional robes normally.

Rintaro:"But he's a guy."

  • Woobie: Pretty much all of the characters fill this role at least once during the series.
  • Woolseyism: The Crunchyroll subs replace references to 2chan memes with ones more familiar to native English speakers.