"Capcom Vs. SNK 2 - Millionaire Fighting 2001" was released in December 2001.

The game is known outside Japan as Capcom Vs. SNK 2 - Mark of the Millennium 2001.

* Here are the debut games of the 24 SNK characters :
Athena Asamiya - Athena
Benimaru Nikaido - The King of Fighters '94
Chang Koehan (accompanied by Choi Bounge) - The King of Fighters '94
Geese Howard - "Fatal Fury - King of Fighters" ("Garou Densetsu - Shukumei no Tatakai" in Japan)
God Rugal - New character based on Omega Rugal from The King of Fighters '94
Haohmaru - Samurai Shodown (Samurai Spirits in Japan)
Hibiki Takane - The Last Blade 2
Iori Yagami - The King of Fighters '95
Joe Higashi - "Fatal Fury - King of Fighters" ("Garou Densetsu - Shukumei no Tatakai" in Japan)
Kim Kaphwan - Fatal Fury 2 ("Garou Densetsu 2 - Arata-Naru Tatakai" in Japan)
King - Art of Fighting ("Ryuuko no Ken" in Japan)
Kyo Kusanagi - The King of Fighters '94
Mai Shiranui - Fatal Fury 2 ("Garou Densetsu 2 - Arata-Naru Tatakai" in Japan)
Nakoruru - Samurai Shodown (Samurai Spirits in Japan)
Orochi Iori - The King of Fighters '97
Raiden - "Fatal Fury - King of Fighters" ("Garou Densetsu - Shukumei no Tatakai" in Japan)
Rock Howard - Garou - Mark of the Wolves
Rugal Bernstein - The King of Fighters '94
Ryo Sakazaki - Art of Fighting ("Ryuuko no Ken" in Japan)
Ryuhaku Todo - Art of Fighting ("Ryuuko no Ken" in Japan)
Ryuji Yamazaki - Fatal Fury 3 - Road to the Final Victory ("Garou Densetsu 3 - Haruka-Naru Tatakai" in Japan)
Terry Bogard - "Fatal Fury - King of Fighters" ("Garou Densetsu - Shukumei no Tatakai" in Japan)
Vice - The King of Fighters '96
Yuri Sakazaki - Art of Fighting 2 ("Ryuuko no Ken 2" in Japan)

* And the 24 from Capcom :
Akuma (Gouki in Japan) - Super Street Fighter II Turbo ("Super Street Fighter II X" in Japan)
Balrog (M. Bison in Japan) - Street Fighter II - The World Warrior
Blanka - Street Fighter II - The World Warrior
Cammy - Super Street Fighter II - The New Challengers
Chun-Li - Street Fighter II - The World Warrior
Dan Hibiki - Street Fighter Alpha - Warriors' dreams (Street Fighter Zero in Japan)
Dhalsim - Street Fighter II - The World Warrior
Eagle - Street Fighter
Edmund Honda - Street Fighter II - The World Warrior
Guile - Street Fighter II - The World Warrior
Ken Masters - Street Fighter
Kyosuke Kagami - Rival Schools - United by Fate
M. Bison (Vega in Japan) - Street Fighter II - The World Warrior
Maki - Final Fight 2
Morrigan Aensland - Darkstalkers - The Night Warriors ("Vampire - The Night Warriors" in Japan)
Rolento Schugerg - Final Fight
Ryu - Street Fighter
Sakura Kasugano - Street Fighter Alpha 2 (Street Fighter Zero 2 in Japan)
Sagat - Street Fighter
Satsui no Hadou ni Mezameta Ryu - Street Fighter Alpha 2 (Street Fighter Zero 2 in Japan)
Shin Akuma - (New Character based on Shin Akuma from Street Fighter Alpha 2)
Vega (Balrog in Japan) - Street Fighter II - The World Warrior
Yun Lee - Street Fighter III - New Generation
Zangief - Street Fighter II - The World Warrior

Before the match begins, if Sakura and Yuri are about to fight, Yuri does a parody of Felicia's intro from "Vampire Savior" where she raises her hand in a surprised position and says 'Osu' (karate greeting). Sakura bows responding 'Pleased To Meet You'.

The game contains six grooves that you can select. There are three from Capcom and three from SNK. Interesting enough the Capcom grooves put together spell out CAP and SNK spells out SNK. Each groove came from a specific game in each company's series...
* C Groove : From Street Fighter Alpha 3's A-ism. Powers up to three level and you can variate the strength of your super depending if you hit LP/LK (Weak), MP/MP (Middle), and HP/HK (Strong).
* A Groove : A combination of Street Fighter Alpha 3's V-ism and Super Street Fighter II Turbo's system. The main draw of this groove is the custom combos.
* P Groove : From "Street Fighter III - Third Strike"'s engine. The main feature of the groove is the parry technique.
* S Groove : From "The King of Fighters 94" to 96, in KOF97 & 98 it's under the Extra system. You can either charge up the super meter by being attacked or by using HP & HK to charge it. When your life is low you can perform more powerful supers.
* N Groove : From The King of Fighters 97 & 98 under the Advanced system. This groove allows you to initiate a MAX status at a cost of one charged meter. During the MAX status your offense and defense strength increase and at a cost of one charged meter you can perform the strongest super.
* K Groove : From "Samurai Showdown". This groove allows you to go into a 'rage' mode once your meter fills up. The meter can only fill when you are hit or block an opponent's attack. Also, the groove has a 'Just Defended' action where you block just as the attack hits you. This is most likely from Garou - Mark of the Wolves.

The Osaka stadium stage is based on the real life Nagai Stadium in Osaka, Japan.

The floats in the background of the Aomori stage resemble E.Honda (on the left), Haohmaru (on the right), and Kyoshiro (from the Samurai Shodown series)

Cameo Apperances :
* Aomori : Goro Daimon (from The King of Fighters) can be seen banging drums
* London : Dudley (along with his butler), Elena (from Street Fighter III), Carman Cole (from Art of Fighting 3), Billy & Lilly Kane (from Fatal Fury), Mei-Ling (from Red Earth), and Rose (from Street Fighter Alpha) can be seen in the background.
* Nairobi : Rouge (from the Power Stone) & Leona (from The King of Fighters) are on top of a car. Alex (from Street Fighter III), Fokker (from Power Stone), Ralf Jones, Clark Steel, and Heidern (from The King of Fighters) can be seen behind the car. Goro Daimon also appears to watch the battle when Kyo fights Benimaru in-game.
* Shanghai : Hsien-Ko (from Darkstalkers), June (from Star Gladiator), Xiang Fei (from Fatal Fury), Shermie, Chin Gentsai, and Bao (from The King of Fighters) can be seen throughout the rotating arena. Goro Daimon also appears to watch the battle when Kyo fights Benimaru in-game.