YMMV / Summer Wars

  • Award Snub: Or rather, Nomination Snub. After a limited theatrical release, FUNimation attempted to submit Summer Wars for an Academy Award, but, due to the fact that there were less than 16 entries submitted that year, only three nominations were allowed instead of five as the Academy policy dictates, and Summer Wars was not chosen.
  • Crack Pairing: The pairing of Riichi (the uncle in the Self Defense Force) and Wabisuke grew immensely popular on Pixiv and elsewhere despite the fact that the two are never shown directly interacting with each other.
  • Crowning Music of Awesome:
    • Battle Again, which plays during King Kazma's rematch with Love Machine and during Natsuki's Hanafuda card game with Love Machine.
    • The ending song by Tatsuro Yamashita is touching and happy at the same time
  • Ensemble Darkhorse:
    • Kazuma, along with his avatar King Kazma, has quite a lot of fanart; enough to get a spin off manga .
    • The series's resident Badass Grandma Sakae, who was so awesome that her eventual death due to Love Machine's meddling not only hit the Jinnouchi clan rather hard in the heart, but also anyone and everyone who watched the film.
  • "Funny Aneurysm" Moment: The climax of the movie prominently features a Japanese asteroid sample-return probe being hijacked by Love Machine and set on a re-entry profile that will destroy a nuclear power plant. The Japan Aerospace Exploration Agency's Hayabusa mission was a similar asteroid sample return probe which did return to Earth in the summer of 2010, and which did experience failures leading to a barely-controlled crash-landing in Australia.
  • Harsher in Hindsight: Love Machine makes plans to drop a satellite on top of a nuclear power plant, which draws disturbing parallels to Fukushima reactor incident.
  • Hilarious in Hindsight:
  • Spiritual Licensee: It's the best Digimon film ever made. It helps that it's the Spiritual Successor to part of an actual Digimon film.
  • Superlative Dubbing: A lot of people absolutely LOVE the English dub for its voice choices and no awkwardness at all.
  • Suspiciously Similar Song: 'Overture of the Summer Wars' is a heterogeneous piece of music that includes a just-barely-changed sample from Ralph Vaughan Williams's suite 'The Wasps'.
  • The Untwist: The mastermind behind the Love Machine is none other than the shady Black Sheep of the Jinnouchi family, Wabisuke.
  • Viewer Gender Confusion: Kazuma's character design and voice are so feminine that many an audience mistook him for a young girl when he first appeared.