History Trivia / YuGiOhMasterDuel

** [[https://yugipedia.com/wiki/Prisoner_Princess_of_Fruitful_Flames "Prisoner Princess of Fruitful Flames"]], a card from the Core Booster ''Phantom Nightmare'' that received an advance release in ''Master Duel'' to promote the box's release in Japan, was accidentially revealed a few days prior to its official announcement due to her artwork appearing on a banner ad in the Japanese [=PS5 PlayStation=] Store.

** "Prisoner Princess of Fruitful Flames" was released in Master Duel a couple days before its physical print release in the ''Phantom Nightmare'' set.

** "Prisoner Princess of Fruitful Flames", a card from the Core Booster ''Phantom Nightmare'' that received an advance release in ''Master Duel'' to promote the box's release in Japan, was accidentially revealed a few days prior to its official announcement due to her artwork appearing on a banner ad in the Japanese [=PS5 PlayStation=] Store.

** Rather infamously, content creator Dkayed (who also owns the unofficial subreddit for the game and the unofficial fansite "Master Duel Meta") consistently leaks information for upcoming Selection Packs and card updates on his streams via what is assumed to be an inside source in Konami. Konami has banned him from official events for this.

* MoneyDearBoy: Players have noticed that problematic cards will not be restricted as long as the Selection Pack that features them remains available in the shop. Konami may have the foresight to preemptively restrict them on release, but the cards are effectively untouchable until they can't be purchased. The biggest offenders by far are the Tearlaments -- Konami's refusal to restrict them while their Selection Pack is available meant that controlling their strength involved restricting ''other'' generic cards that they used as playmakers; these decisions have injured the strength of other weaker decks as collateral damage.

** Rather infamously, content creator Dkayed (who also owns the unofficial subreddit for the game) consistently leaks information for upcoming Selection Packs and card updates on his streams via what is assumed to be an inside source in Konami. Konami has banned him from official events for this.

* ContentLeak: Whenever a big update happens, the animations of upcoming boss monsters, upcoming packs, duel fields, duel mates and upcoming events will also leak accordingly. Of note, the "Scapegoat" mate was leaked in release, in January 2022, but it was released in June 2022, over 5 months later.

** On the flipside, some World Premiere archetypes get released in ''Master Duel'' before they are printed in the OCG in their annual "World Premiere" boosters. So far, "Beetrooper" and "Ghoti" have been released in ''Master Duel'' prior to their respective OCG releases.

** "Beetropers", a TCG-original archetype, would invert the previous situation and be released in August 2022, a month before the archetype was set to debut in ''World Premiere Pack 2022'' in the OCG.

** [[https://yugipedia.com/wiki/Power_Pro_Lady_Sisters "Power Pro Lady Sisters"]] and [[https://yugipedia.com/wiki/Power_Pro_Knight_Sisters "Power Pro Knight Sisters"]], special cards printed in the OCG in collaboration with the ''VideoGame/PowerfulPro'' mobile game, were released in both this game and ''VideoGame/YuGiOhDuelLinks'' despite lacking a TCG print.

** [[https://yugipedia.com/wiki/Power_Pro_Lady_Sisters "Power Pro Lady Sisters"]] and [[https://yugipedia.com/wiki/Power_Pro_Knight_Sisters "Power Pro Knight Sisters"]], special cards printed in the OCG in collaboration with the ''VideoGame/PowerfulProBaseball'' mobile game, were released in both this game and ''VideoGame/YuGiOhDuelLinks'' despite lacking a TCG print.

* OutOfOrder: The game generally follows its real-life OCG counterpart in terms of release schedule for cards, but Konami seems to like having a bit of leeway to jump forwards and backwards a bit, making some cards from a set available earlier than others. For example, by the end of 2022 cards from main series set ''Power of the Elements'' had been pushed out for specific archetypes, such as "Branded", "Scareclaw" and "Suship", while certain archetypes were still missing support from ''Battle of Chaos'', which is two sets behind ''POTE'' in release order.

** The game's release schedule for new cards closely follows the OCG, and thus some cards appear in the game in English before their translated TCG counterparts are physically printed. A few examples include "[[https://yugipedia.com/wiki/Odd-Eyes_Wing_Dragon Odd-Eyes Wing Dragon]]" and "[[https://yugipedia.com/wiki/Shell_Knight Shell Knight]]", which were both included in the base game before they were imported to the TCG in 2022, and the November 2022 "Battle Trajectory" set included many cards from the OCG "History Archive Collection 2022" booster that had yet to be printed in the TCG, including "[[https://yugipedia.com/wiki/Soul_of_the_Supreme_King Soul of the Supreme King]]", "[[https://yugipedia.com/wiki/Performapal_Classikuriboh Performapal Classikuriboh]]", and "[[https://yugipedia.com/wiki/Performapal_Duelist_Extraordinaire Performapal Duelist Extraordinaire]]".

** The game's release schedule for new cards closely follows the OCG, and thus some cards appear in the game in English before their translated TCG counterparts are physically printed. A few examples include "[[https://yugipedia.com/wiki/Odd-Eyes_Wing_Dragon Odd-Eyes Wing Dragon]]" and "[[https://yugipedia.com/wiki/Shell_Knight Shell Knight]]", which were both included in the base game before they were imported to the TCG in 2022, and the November 2022 "Battle Trajectory" included many cards from the OCG "History Archive Collection 2022" booster that had yet to be printed in the TCG, including "[[https://yugipedia.com/wiki/Soul_of_the_Supreme_King Soul of the Supreme King]]", "[[https://yugipedia.com/wiki/Performapal_Classikuriboh Performapal Classikuriboh]]", and "[[https://yugipedia.com/wiki/Performapal_Duelist_Extraordinaire Performapal Duelist Extraordinaire]]".

** A select few cards available in the [=OCG=] made their first appearance in English in this game before their release in the [=TCG=], such as "[[https://yugipedia.com/wiki/Odd-Eyes_Wing_Dragon Odd-Eyes Wing Dragon]]" (Released in the [=OCG=] in 2017), and "[[https://yugipedia.com/wiki/Shell_Knight Shell Knight]]" (Released in the [=OCG=] in 2020), with both of these cards eventually seeing a release outside of ''Master Duel'' later on in 2022.

** "Beetropers", a TCG-original archetype, would invert the previous situation and be released in August 2022, a month before the archetype was set to debut in ''World Premiere Pack 2022" in the OCG.

* MarthDebutedInSmashBros: A select few cards available in the [=OCG=] made their first appearance in English in this game before their release in the [=TCG=], such as [[https://yugipedia.com/wiki/Odd-Eyes_Wing_Dragon Odd-Eyes Wing Dragon]] (Released in the [=OCG=] in 2017), and [[https://yugipedia.com/wiki/Shell_Knight Shell Knight]] (Released in the [=OCG=] in 2020), with both of these cards eventually seeing a release outside of ''Master Duel'' later on in 2022.

* MarthDebutedInSmashBros: A select few cards available in the [=OCG=] made their first appearance in English in this game before their release in the [=TCG=]. %%* Mind explaining what these cards are exactly?

* MarthDebutedInSmashBros: A select few cards available in the [=OCG=] made their first appearance in English in this game before their release in the [=TCG=].

* TheWikiRule: [[https://game8.co/games/Yu-Gi-Oh-Master-Duel The Yu-Gi-Oh! Master Duel Guide & Walkthrough Wiki]] features information missing from the regular Yugipedia such as this game's card packs and how many Card Points each card needs to be crafted.

* FollowTheLeader: This iteration of the digital card game borrows some inspiration from ''{{VideoGame/Hearthstone}}'' (the card attack and player defeat animations) and ''{{Videogame/Legends Of Runeterra}}'' (purchasable playing fields and pets).