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Street Fighter II': Champion Edition (or Street Fighter II Dash, as it is officially pronounced in Japan) is a port of the 1992 arcade game of the same title released for the PC Engine. It was the second and last Street Fighter game released for the platform, following Fighting Street (a retitled port of the original Street Fighter). Unlike its predecessor, which was one of the first PCE games released in CD-ROM² format, the PCE version of Champion Edition was a 20-Megabit HuCard, which was the largest ROM size that the format was ever available in. As a result, the Champion Edition HuCard is a bit thicker than other releases.
The PCE version of Champion Edition was the second console release in the Street Fighter II series, following the Super NES version of Street Fighter II: The World Warrior released the previous year. The PCE Champion Edition was considerably more accurate to the arcade version compared to the SNES World Warrior, as it has more accurately drawn ending sequences and retains all of the announcer's voice clips (such as when counting down during the continue screen or when mentioning a country's name before a match), and it even restores the barrel-breaking minigame that was missing in the first SNES game. However, it lacks the Turbo mode that was later added in Street Fighter II Turbo: Hyper Fighting for the SNES, as well as in Street Fighter II′: Special Champion Edition for the Mega Drive.
Because the standard PC Engine controller at the time only featured two action buttons (Ⅰ and Ⅱ), NEC Avenue produced the Avenue Pad 6 specifically for Street Fighter II′, which adds four more action buttons (Ⅲ, Ⅳ, Ⅴ and Ⅵ). When played on a standard controller, RUN , Ⅱ and Ⅰ are used as general attack buttons, while SELECT toggles between punches and kicks.