* If you pause to read the list of people who solved the initial encryption for Love Machine, you'll find quite a few real-world notable mathematicians.
** And quite a few European [[UsefulNotes/AssociationFootball footballers]] such as Robin Van Persie and Andrei Arshavin (I have no idea why).
* If you also pause during the combats in the virtual battleground (in particular right after Kazuma's first defeat, which has a good still image) you can see the tournament inscription ends with "...FOR THE GLORY OF THE INTERNETS".
* RecycledScript: Viewers who previously watched ''Our War Game'' will probably note the similarities between movies. The reason: both were written by Mamoru Hosoda.
* SpiritualSuccessor: of ''[[Anime/DigimonAdventure Our War Game]]''.
* WhatCouldHaveBeen: News revealed that ''Summer Wars'' was rejected by Creator/WarnerBros... in which case, an entirely new dub would've had to be made! Who knows how much the chances of an Oscar nomination would've changed if that had happened!
* TheWikiRule: [[http://summerwars.wikia.com/wiki/Summer_Wars_Wiki Summer Wars Wiki.]]
* XMeetsY: ''Films/WarGames'' meets ''VideoGame/MegaManBattleNetwork''.
** Or, ''AWalkInTheClouds'' meets ''Literature/{{Neuromancer}}''.
* The movie was aired on Creator/{{Toonami}} as part of a Month of Movies event on December 2013. The following year, it was reaired as part of Month of Movies December 2014 due to budgetary issues on the part of Toonami.
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