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This means it was never implemented into the game or was removed, cut or altered at some point of its development, and this article pertains to its original implementation.
The Ōdama Rasengan (大玉螺旋丸, lit: Great Ball Spiraling Sphere), was the fully charged variation of Naruto's standard special move in Super Smash Flash 2 until v0.8a, when it was replaced with Fūton: Rasenshuriken.
A ninjutsu with pre-eminent destructive power, caused by wildly spinning chakra inside one's palm and compressing it to a high density — the Rasengan. Using the same essentials, but also rapidly increasing the amount of chakra used, results in the Big Ball Rasengan. It was created by Naruto Uzumaki during his training with Jiraiya. Like the original, Naruto uses a Shadow Clone to help form it but unlike the original technique, the shadow clone helps him to carry it. Compressed to an even higher density than before, the chakra is released all at once as soon as the technique hits the target, releasing an extraordinary destructive power. Proportional to this power, the amount of chakra it consumes is also extraordinary. With him possessing the near-inexhaustible supply of the Nine-Tails' chakra, it could be said that this technique is for no-one but Naruto.
This technique is a much more powerful version of Naruto's standard Rasengan and can trap opponents inside before blowing them away with incredible knockback. Kyūbi Naruto's version of this attack is called the Kyūbi Rasengan (九尾螺旋丸, "Nine-Tailed Spiraling Sphere") and is even more powerful than the Ōdama Rasengan.
|Standard special move||Rasengan / Rasenshuriken|
|Side special move||Shadow Clone Toss|
|Up special move||Shadow Clone Slash|
|Down special move||Shadow Clone Summon|
|Final Smash||Kyūbi Naruto|
|Standard special move||Akai Rasengan|
|Side special move||Bijū Dama|
|Up special move||Guren Shingeki|
|Down special move||Red Chakra Arms|