Big Ball Rasengan

The Big Ball Rasengan is a more powerful version of the Rasengan created by Naruto during his training with Jiraiya in the gap in time dividing Part I and II of the series. Like the regular Rasengan, Naruto uses a shadow clone to help form it. However, by adding increased amounts of chakra, he can increase the size and power of the standard Rasengan. It deals astounding damage to the area and the target, but it leaves Naruto exhausted.

Also during Naruto's training with Jiraiya, while training to break out of genjutsu, he accidentally released his chakra creating a huge Rasengan similar to this, the force of this Rasengan was strong enough to throw back Gamariki into the small river. Later on he purposely creates one of these, being told by Jiraiya to do so, creating the Big Ball Rasengan, though it was bigger than an average Big Ball Rasengan but smaller than the the Sage Art: Big Ball Rasengan, its strength was strong enough to defeat the Conch King.