At the Game developer Conference that took place last week, Ono san did a presentation where he explained the process behind making Street Fighter IV and how challenging it was to live to fans expectation. Gamespot has the full scoop.
From the article: " Beyond the looks, the developers also strove to keep everything else about the characters the same, from their personalities to the way they speak. And while the game did make the leap to 3D visuals, Ono kept the gameplay 2D, right down to the invisible hit boxes used to determine when a strike has landed. While the game is fully 3D and could run at 60 frames a second, the developers intentionally "skipped" animation frames to make sure the game looked right to players of the old 2D Street Fighters as well. "
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