Acclaimed Flop: Downplayed. While the game sold very poorly due to a series of PR disasters before release, the basic gameplay was very well regarded by critics and players. However, everyone agreed that the gameplay itself wasn't enough to save the rest of the game from the bare-bones, problematic roster, the unappealing graphics, the complete lack of single-player content, and the awfully-constructed story mode.
Pokken Tournament DX was released the same week as Infinite on mutually exclusive consoles.note Pokken Tournament DX was released for the Nintendo Switch, while Infinite was released for the PlayStation 4, Xbox One, and PC. Developed by Bandai Namco, another of Capcom's fighting game rivals (coincidentally, one of Bandai-Namco's other games like Tekken 7 featured Akuma before he appeared in Street Fighter V; probably as a cross promotion), Pokken Tournament DX outsold Infinite in several markets in the launch weeks of the title, despite releasing a few days later and on only one console.
Arc System Works, one of Capcom's main fighting game competitors, has two titles that can be seen as competing with this game:
Dragon Ball FighterZ, due to that game's similarities to Marvel vs. Capcom 3 (3-against-3 fighting system, assists, and in general the chaotic nature of the game). This was turned Up to Eleven when FighterZ's closed beta was released on September 16, 2017, a few days before the official release date of Infinite.
The character roster in the base game features no X-Men or Fantastic Four characters, while the Marvel side is made up almost entirely of those present in the Marvel Cinematic Universe.note Of the base roster, the only non-MCU character is Nova and even then, the Nova Corps is at least present in the Guardians of the Galaxy films. Some speculate this was a mandate on Marvel's part due to an Executive Veto from Marvel Entertainment CEO Ike Perlmutter.note Who has been phasing the characters out of adaptations and media as to avoid promoting 20th Century Fox's X-Men Film Series, as Perlmutter and then-Fox CEO Tom Rothman (who is currently the Chairman of Sony Pictures) were known for having a notoriously toxic relationship. This was also meant to decrease the market value of the X-Men so that Disney was able acquire Fox for less money in March 2019.
The themes for returning Marvel characters such as Captain America and Spider-Man were changed at the insistence of Marvel, who wanted their own composers to write theme music for their characters that sounded more similar in tone to the scores of the Marvel Cinematic Universe films. This included writing the new themes to represent the characters' "personality and journey". As a sort of compromise, those same composers rearranged Cap and Spidey's older themes as the credits music.
According to the recording studio used for the game, Capcom and Marvel mandated that the voice cast couldn't voice characters from both the Capcom and Marvel sides of the roster. This is the reason why some of the returning voice actors only reprised certain roles.note Such as Laura Bailey not reprising her role as Chun-Li, as she was recruited to voice Black Widow; this is also likely the reason why Roger Craig Smith doesn't reprise his role as Captain America.
According to Jonathan Parkes, a competitive player who helped to create the game's character trailers, Marvel didn't allow them to show Capcom characters beating up Marvel characters in combo videos.
Exiled from Continuity: Like in many other Marvel properties in the '10s, X-Men and Fantastic Four characters were no-shows due to their film rights being tied to 20th Century Fox and Marvel's attempts to undermine them at that point in time. This angered fans to say the least. However, Storm is referenced by Black Panther in one of his quotes, though not by name.
The cube-shaped prison generated by the Space Stone's Infinity Storm was quickly dubbed the "Shame Box." An offshoot of said nickname is the "Shame Cube". Another variant is the Box ofShame.
The game is referred as "Marvel vs. Capcom 3 Lite" in some circles due to the minimalist roster and style which some feel is just a watered down version of the third game.
Some have referred it as "MCU vs. Capcom" due to the fact that 14 out of the 15 launch Marvel characters are ones who have appeared in MCU movies and TV shows in some form or another.note Nova being the exception, and even then the Nova Corps themselves have appeared. In terms of DLC, Venom is by far a more notable exception in the sense that his upcoming film will only tangentially be involved in the MCU but will mostly be retained within Sony's confines. The name, more often that not, is not complimentary.
A more derisive nickname for the game is "Functions vs. Functions" after a very poorly received comment made by Peter "Combofiend" Rosas regarding the decision to exclude X-Men and Fantastic Four characters from the base roster.
Lightning Loop: Carried over from the third game, it's a combo of Zero that involves his Raikousen special and Sougenmu hyper that traps the foe in a loop, with multiple ways to set it up.
Stairway (To Heaven): A special combo that's only possible with Flight and variable air dash (Morrigan, Captain Marvel, Ultron etc), which is done by cancelling a normal air attack to a dash to another normal air attack to another dash multiple times.
Monster Hunter has been christened the "U N G A W A I F U". This stems from another FGC meme (originally from Guilty Gear) where big characters with lots of armor and far reaching normals, who are able to do a lot of damage with minimal execution are called "UNGA" or "U N G A B O I S" (based on a sound commonly associated with gorillas and cavemen). Based on her trailer, Monster Hunter seems to fit the mold, with the added bonus of being a girl.
"Thicc Girl" became a new fan nickname for Chun-Li. This was due to many fans misinterpreting the nickname the Hulk uses when he tags her in as "Thick Girl".note He's actually saying "Kick Girl". Her Hartman Hips are a popular subject of the "T H I C C" meme.
Thorn Carpet: Dormammu's new "Power of Creation x3 -> Liberation" move. In the previous game, the move simply binds the enemy to the ground, making them unable to jump, and that's it; the move deals no damage. Here, the same move now creates a carpet of energy spikes that not only can do the same thing, but can also do damage, multiple hits, and most importantly carry the opponent towards him even if it's blocked, creating easy lockdown settings.
Franchise Killer: The game's mixed-to-negative reception and poor sales caused many fans to abandon it. As a result, there are currently no plans to make an another Marvel vs. Capcom game (aside with hypothetical Updated Re-release(s) of certain games for the series or remakes) for the foreseeable future because Marvel and Capcom are focused on other projects. This had very notorious effects outside Capcom, however, as both Disney and Marvel seems to had became Persona Non Grata for many Japanese developers, leaving Square Enix and Nintendo as the only Japanese companies willing to deal with them.note And even in those cases, that was due to previous compromises in the SE case related with the Kingdom Hearts franchise, and Marvel's Avengers, though that game was developed by an American developer, rather than Square Enix in Japan, very likely to avoid their Japanese teams to deal with either Marvel and Disney. In Nintendo's case, this is quite a somewhat strange case, as Marvel Ultimate Alliance 3: The Black Order, while developed in Japan, is technically a sequel of a title originally developed by Western developers. Then when we got a re-release of some Arcade Games by Arcade 1 Up yet again, only time can tell on when they can negotiate, again (if we can get an another Updated Re Release of Marvel vs. Capcom 2).
In November 2016, there were rumors floating around the Internet that Capcom was developing "Marvel vs. Capcom 4," complete with fake screenshots and a teaser. While said screenshots and teaser were proved to be false, it did get many fans thinking that a fourth installment really was in the works.note It helps that this was after Disney Infinity was given the axe and Disney began outsourcing the Marvel license to other studios again, which resulted in Marvel Ultimate Alliance getting re-released and the announcement of a new Spider-Man game being developed by Insomniac Games. This was proven true when Marvel vs. Capcom: Infinite was announced during the PlayStation Experience event in December 2016.
Most fans were able to guess that the main villain would be a fusion of Ultron and Sigma because of the stinger in the announcement trailer.
Roster leaks aside, the involvement of the Infinity Stones in the Story Mode led many to predict that Thanos would also be in the game, either as part of the roster or at the very least as an NPC in the Story Mode. The former ended up being true.
Many fans correctly guessed that the Soul Stone would be able to revive characters after their health bars have been depleted, as this is the first MVC game to have the defeated characters visibly unconscious in the background instead of simply having them disappear.
For several months, many fans couldn't figure out who Mega Man X's voice actor was. At leasttwo fans were quietly able to guess that it was Ted Sroka before it was confirmed in September 2017.
Limited Special Collector's Ultimate Edition: The Collector's Edition of the game includes an in-game character pass that adds six DLC characters, LED Infinity Stones in a decorated box, and interlocking diorama figures of Chun-Li, Mega Man X, Iron Man, and Captain Marvel.
No Budget: Reportedly, the game was made on a very low budget, with estimates being at least half of the budget for Street Fighter V's DLC. As a result, many of the character models were pulled from Marvel vs. Capcom 3 and other older titles, with only slight changes to make them work in the new art style.
No Dub for You: In an inversion, the game does not have a Japanese voice option (this is justified, considering the time and budgeting constraints of the game).
Old Shame: Capcom has no plans to update the game outside of bug fixes since the 1/18/18 update due to low sales.
Brian Bloom reprises his role as Captain America, possibly due to his current voice actor, the aforementioned Roger Craig Smith, already voicing Chris.
Eric Loomis reprises his role as Iron Man, despite the character having since been played by Adrian Pasdar and Mick Wingert in more recent appearances.
Chris Cox reprises his role as Hawkeye, despite the character having since been played by Troy Baker in more recent appearances.
T.J. Storm reprises his role as Strider Hiryu from Ultimate Marvel vs. Capcom 3 after being replaced by Marc Biagi and Mike Willette, who provided Hiryu's speaking lines and voice grunts in Strider (2014), respectively.
Preview Piggybacking: Inverted. On the day of Guardians of the Galaxy Vol. 2's theatrical release, the official Marvel vs. Capcom: Infinite Twitter account released a teaser showing off one of Rocket Raccoon's Hypers as cross promotion. The tweet itself even lampshades this, being accompanied by the hashtags "#ShamelessPlug" and "#MovieTieIn".
Refitted for Sequel: As detailed in the previous game's Trivia page, Black Panther, Black Widow, Monster Hunter, X, Venom and Captain Marvel (then under her previous Ms. Marvel moniker) were considered to join the roster of MVC3 but were cut for varying reasons before making their proper Vs. series debut here.
The Capcom UK team pushed for the inclusion of Akira Kazama from Rival Schools, but she didn't make the cut.
According to former professional player Ryan "Filipino Champ" Ramirez, who at the time promoted the game heavily and was in good graces with Capcom, the original plan for the end of its lifespan was to have more than double the amount of characters and stages. Had development not been canceled due to its financial and critical failure, there would have been 61 total characters on the roster, surpassing 2 as the biggest roster in the entire series.
This was the first fighting game that Capcom had developed in-house in over a decade, as previous installments and Capcom's other fighting games had been outsourced to and co-developed with other game development companies over the years.note i.e. Tatsunoko vs. Capcom and Marvel vs. Capcom 3 were outsourced to 8ing/Raizing, while Street Fighter IV and V were outsourced to Dimps.
On the Marvel side of things, the story's general premise seems to be a combination of Annihilation Conquest, where Ultron merges with a sentient technological virus to achieve a stronger form and threaten the entire universe, and Ultron Forever, where Ultron achieves godlike power (the Odinforce in that case rather than the Infinity Stones) and uses it to enslave/exterminate humanity. The first story trailer even shows him making Asgard his throne much like in Ultron Forever.
From Capcom's end, the plot closely resembles the ArchieMega Man/Sonic the Hedgehog crossover comic event Worlds Unite, in which Sigma forms an alliance with a being from an alternate universe, merges his and their universes together, achieves near-godlike power, and attempts to conquer the merged world. Though unlike Worlds Unite, he regards his partner Ultron here as close to an equal rather than a servant with a Restraining Bolt as he did with his captives Doctors Eggman and Wily there.
This is the first Marvel fighting game by Capcom, and the first Marvel game by Capcom since the beginning of their long-running partnership in The Punisher, not to feature any playable character associated with the X-Men, be they hero or villain.