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If The New Challengers release of the game detects that the cartridge ROM is too large or not mirrored correctly, which is usually caused by use of a cartridge copier, the game will completely black out the screen some time after starting a match.
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This was corrected in "Hyper Street Fighter II", but with a comma instead of ellipses.
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subdirectory_arrow_right Street Fighter II (Game), Street Fighter II: The World Warrior (Game), Street Fighter II: Champion Edition (Game), Street Fighter II' Turbo: Hyper Fighting (Game)
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In later versions of the game, starting with "Super Street Fighter II: The New Challengers", Ryu would receive a legitimate orange Hadoken special move called "Shakunetsu Hadoken"
Mugen Fighting Guild forum thread:
http://mugenguild.com/forum/topics/akira-nishitani-speaks-sf2-director-154210.msg1847093.html;topicseen#msg1847093
[Below additional sources provided by Salnax.]
Akira Nishitani tweet:
https://x.com/nin_arika/status/376547244796674048
EventHubs article:
https://www.eventhubs.com/news/2013/oct/28/all-hadoukens-could-originally-be-ducked-quicker-inputs-could-have-led-more-damage-and-more-sf2-director-divulges-interesting-development-facts/
http://mugenguild.com/forum/topics/akira-nishitani-speaks-sf2-director-154210.msg1847093.html;topicseen#msg1847093
[Below additional sources provided by Salnax.]
Akira Nishitani tweet:
https://x.com/nin_arika/status/376547244796674048
EventHubs article:
https://www.eventhubs.com/news/2013/oct/28/all-hadoukens-could-originally-be-ducked-quicker-inputs-could-have-led-more-damage-and-more-sf2-director-divulges-interesting-development-facts/
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