First revision is from December 1997, but most arcades didn't get the game until January 1998. It was known as the 28th video game released on the CPS-II hardware.
The game was shown at the 1998 AOU Amusement Expo show, in Japan.
Known export releases:
"Marvel vs. Capcom - Clash of Super Heroes [Blue Board]
"Marvel vs. Capcom - Clash of Super Heroes [Grey Board]
"Marvel vs. Capcom - Clash of Super Heroes [Orange Board]
"Marvel vs. Capcom - Clash of Super Heroes [Pink Board]
The game was also re-edited in Japan as "Marvel vs. Capcom - Clash of Super Heroes [Black Board]
Here are the debut comics for the 21 Marvel characters including the Guest Characters (For those with alter-egos, they are also listed) :
Captain America (aka Steve Rogers) - Captain America Comics #1
Carnage (aka Cletus Kasady) - Amazing Spider-Man #359
Colossus (aka Piotr Nikolaievitch Rasputin) - Giant-Size X-Men #1
Cyclops (aka Scott Summers) - X-Men #1
Gambit (aka Jean-Luc 'Remy' LeBeau) - Uncanny X-Men #266
Hulk (aka Robert Bruce Banner) - Incredible Hulk #1
Iceman (aka Robert 'Bobby' Drake) - Uncanny X-Men #1
Jubilee (aka Jubilation Lee) - Uncanny X-Men #244
Juggernaut (aka Cain Marko) - X-Men #12
Magneto (aka Erik 'Magnus' Lehnsherr) - X-Men #1
Onslaught - X-Men (Vol. 2) #53
Psylocke (aka Elizabeth 'Betsy' Braddock) - New Mutants Annual #2
Rogue - Avengers Annual #10
Sentinel - Uncanny X-Men #14
Spider-Man (aka Peter Parker) - Amazing Fantasy #15
Storm (aka Ororo Munroe) - Giant Size X-Men #1
Thor (aka Jake Olsen) - Journey Into Mystery #83
U.S. Agent (aka John F. 'Johnny' Walker) - Captain America #351
Venom (aka Edward 'Eddie' Brock) - Amazing Spider-Man #300
War Machine (aka James R. 'Rhodey' Rhodes) - Iron Man #281
Wolverine (aka James 'Logan' Howlett) - Incredible Hulk #180
Here are the debut games for the 19 Capcom characters including the Guest Characters :
Anita - "Night Warriors - Darkstalkers' Revenge" ("Vampire Hunter - Darkstalkers' Revenge" in Japan)
Arthur - "Ghosts'n Goblins
" in Japan)
Captain Commando - "Captain Commando"
Chun-Li - "Street Fighter II - The World Warrior
Devilotte Do Dethsatan IX (aka Devilot) - "Cyberbots - Fullmetal Madness"
Jin Saotome - "Cyberbots - Fullmetal Madness"
Lou - "Three Wonders" ("Wonder 3" in Japan)
Megaman (Rockman in Japan) - Megaman (Rockman in Japan)
Michelle Heart - "Legendary Wings
" ("Ares No Tsubasa - The Legendary Soldiers
" in Japan)
Morrigan Aensland - "Darkstalkers - The Night Warriors" ("Vampire - The Night Warriors" in Japan)
Pure and Fur - "Capcom World 2 - Adventure Quiz"
Roll - Megaman (Rockman in Japan)
Ryu - "Street Fighter
Saki - "Quiz Nanairo Dreams - Nijiirochou no Kiseki
Shadow - "Marvel Super Heroes vs. Street Fighter
Strider Hiryu - "Strider
" ("Strider Hiryu" in Japan)
Ton-Pooh - "Strider
" ("Strider Hiryu" in Japan)
Unknown Soldier - "Forgotten Worlds
" ("Lost Worlds" in Japan)
Zangief - "Street Fighter II - The World Warrior
Strider's ending is a reference to that of the ending in his own game ("Strider
Jin's ending is a reference to Gawaine's ending in "Cyberbots - Fullmetal Madness" (but with Jin taking the place of Gawaine, Onslaught taking the place of the Final Weapon of Destruction, Jin's headband taking the place of Gawaine's sword and Ryu taking the place of Jin).
Megaman's ending is a reference to what happens in his own games ("Mega Man - The Power Battle") when he beats a boss.
Captain Commando's ending is a reference to the ending in his own game ("Captain Commando").
Rumors exist for the reason War Machine was in the roster instead of Iron Man (although Hyper-Armor War Machine in the game had similar moves with Iron Man). The most popular reason being that Capcom, at the time, did not have the rights to use the Iron Man character.
The game background is mainly inspired by the famous comic saga called Onslaught, published in 1996. As in the comic books, Onslaught appears under his two main forms (after defeating the first one, he reveals its ultimate appearance).
Shirley Burton holds the official record for this game with 1119300 points.
Suleputer released a limited-edition soundtrack album for this game (Marvel Vs. Capcom OST - CPCA-1005) on March 21, 1998.
Michael Jackson used to own this game. It was sold at the official Michael Jackson Auction on April 24, 2009.