Capcom vs. series

Capcom's Versus series is a phenomenally popular set of usually one-on-one fighting games, sometimes pitting Capcom characters against each other, and sometimes having them face off against characters from another company, such as Marvel or SNK.

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Main titles
Here are some possible titles:
 * 1) Capcom vs. SNK 3: Battle of the Ages 2012
 * 2) CXN: Capcom X Namco
 * 3) Marvel vs. Capcom 4: The Next Generation
 * 4) Nickelodeon vs. Capcom
 * 5) Street Fighter vs. Virtua Fighter
 * 6) Street Fighter Vs. Guilty Gear: The War of Heroes
 * 7) Capcom vs. Namco Bandai
 * 8) Marvel vs Capcom 4: Battles of Final Honor
 * 9) Capcom vs Sony
 * 10) Marvel vs Capcom 5: The Final Battle
 * 11) Capcom vs. Sega
 * 12) Street Fighter vs. BlazBlue
 * 13) Looney Tunes vs. Capcom
 * 14) DC vs Capcom: The Legend Era
 * 15) Street Fighter vs. GARO: Battle of Warriors
 * 16) Capcom vs. Konami
 * 17) Street Fighter Vs Mortal Kombat
 * 18) Street Fighter X Mortal Kombat
 * 19) Shonen Jump vs. Capcom
 * 20) Square-Enix vs. Capcom: When Worlds Collide
 * 21) WWE vs. Capcom
 * 22) Horror Icons vs. Capcom
 * 23) Warriors of History vs. Capcom
 * 24) Capcom vs. Nintendo
 * 25) Megaman vs. Diner Dash
 * 26) Megaman vs. Sonic
 * 27) Breath of Fire vs. Final Fantasy
 * 28) Marvel vs. Capcom 2.5
 * 29) Tatsunoko vs. Capcom 2: Barrage of the New World
 * 30) Disney vs Capcom
 * 31) Cartoon Network vs. Capcom: Battles of Chaos Judgment
 * 32) Memes VS. Capcom: The Battle of LOL and Fight
 * 33) Lego Marvel vs. Capcom
 * 34) Street Fighter X Dynasty Warriors
 * 35) Type-Moon Vs Capcom 
 * 36) Type-Moon Vs Capcom 2
 * 37) Tatsunoko VS Capcom 2-Multiverse Crossover
 * 38) Image vs. Capcom
 * 39) Marvel vs Capcom 4: Fate of 4 Worlds
 * 40) Toei vs. Capcom
 * 41) DC Vs. Capcom: Fight of Legends
 * 42) Shonen Jump VS. Capcom: Fight of Century
 * 43) Capcom VS. Arc System Works: Fighting Carnival
 * 44) Dengeki Bunko vs. Capcom
 * 45) Touhou vs. Capcom: Village of the Warriors
 * 46) Street Fighter Vs. Killer Instinct: The Fight of Ages
 * 47) Nitroplus vs. Capcom: The Battle of Heroes
 * 48) Capcom vs. Bandai Namco: The Battle of Legends
 * 49) Sega vs. Capcom: All-Star Battle
 * 50) Capcom vs. Koei-Tecmo: New Age of Fighting
 * 51) Capcom Vs. 07thExpansion
 * 52) Capcom vs SNK 3: Fighters' Spirit