Ultimate Thunder (アルティメットサンダー, Arutimetto Sandā) is an offensive hissatsu tactic.
Inazuma Eleven GO
Inazuma Eleven GO 2: Chrono Stone
Inazuma Eleven GO Galaxy
To break the defense of Teikoku, Shindou Takuto came up with the idea to use Ultimate Thunder, which they created when Kudou Michiya was still the coach for Raimon. Shindou chose Hamano Kaiji, Hayami Tsurumasa, Kirino Ranmaru and Amagi Daichi to be the first four kickers with himself being the last kicker. They decided to practice the tactic but failed as Shindou's kick wasn't strong enough to kick the ball back. Kurama Norihito wanted to try it out but his kick wasn't strong enough as well. Shindou then realized that Tsurugi Kyousuke's kick should be enough to kick the ball back but he didn't join the other members to oppose Fifth Sector at the time, thus he wasn't joining practice. They still decided to try out Ultimate Thunder with Shindou as their last kicker, practicing until the end of the day, and they didn't give up training when the tactic failed over and over again.
Afterwards, this hissatsu tactic was seen yet again in episode 32, but only in a flashback where Tenma, Shinsuke, Shindou, Aoi, Akane and Midori were thinking of the past matches, and it was not used in the episode itself.
The power of this hissatsu tactics in the Chrono Stone game is 40.
Four team members pass the ball to each other; each time they do, the energy gets transferred with each member's pass into the ball until it gets fully charged and gets a glowing appearance. They then pass the ball to the last striker who has a high enough shooting power to volley the ball on the opposing side, causing the energy to explode directly at the centre of the opposing team's defence, which makes an opening for the upcoming striker to try to score a goal.