Art of Fighting 2 (Ryuuko no Ken 2 in Japan) came out in 1994 for the Neo Geo and fixes much of what the first Art of Fighting left unresolved: more playable characters, smoother animations, and a more agile combat pace, without giving up the camera effect that zooms in and out based on the distance between fighters, the saga's trademark. The story follows Ryo Sakazaki and Robert Garcia, characters who would later become recurring figures in the King of Fighters universe.
It's a key piece for understanding SNK's evolution between Fatal Fury and King of Fighters: it introduced ideas of its own, like special-energy drain or pre-fight dialogue, that later became standard in the genre.

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