- Game Breaker: Nakoruru, who became the most dominant character thanks to the ratio system. At the time, she was only the second character in any Capcom-made fighting game (after Akuma) to be banned from tournaments.
- Porting Disaster: The PS1 version; nearly all of the presentation of the original was stripped down (since the PS1 didn't have the tech power for the high-end graphics), losing stage intros and other animations. It had Loads and Loads of Loading heaped onto it as well. It still plays pretty well, but feels so bland as a result.
- Scrappy Mechanic: The Ratio system, wherein each character was assigned a specific "Ratio" denoting that character's overall strength and durability on a 1-4 scale. Teams of up to four characters can be assembled, but their total ratio value can't exceed 4. CvS2, which additionally balanced out and expanded upon the Grooves from CvS1, would do away with this and implement a "free" ratio system, allowing players to create teams of up to three characters and give each character ratios (up to 4 in total) as desired, making the system less limited and cumbersome. The option for basic 1-on-1 and 3-on-3 matches without any ratios involved was also included.
YMMV / Capcom vs. SNK: Millennium Fight 2000