Kamen Rider Decade 30

Episode 30; The Great Rider War - Prologue; ライダー大戦・序章
	Kamen Rider Decade episode
Writer	Yonemura Shouji
Director	Ishida Hidenori
Original air date	August 23, 2009
Viewership	7.3％
Forum Thread	Thread
Episode chronology
← Previous; Episode 29; The Strong Naked Strongman	Next →; Episode 31; Destroyer of Worlds
	Episode List

Kamen Rider Decade
< Kamen Rider Decade 29	The Great Rider War - Prologue ライダー大戦・序章	Kamen Rider Decade 31 >
Setting: Great Rider War World

Important things that happened

Blade, Kiva, and Hibiki Worlds crosspaths and the Riders are fighting against each others.
Narutaki reveals to Tsukasa that Apollo Geist is merging the Worlds.
Tsukasa and Yuusuke convince Kazuma and Wataru to defeat Dai Shocker together instead of killing each other
Natsumi witnesses Saga kills Amaki and Todoroki.
Kenzaki Kazuma stated Dai Shocker is not the real enemy.
Undeads and Fangires join force with Apollo Geist.
Absorbing the Fangires, Apollo Geist gets an upgrade.
Apollo Geist increases the speed of merging the Worlds, resulting Blade's World disppears.

Undeads side with Blade while Fangires side with Kiva.
Kazuma is already the president of Board while Wataru is already the Fangire King.
Garren, Leangle, Ixa, and Saga's users are not revealed.
Haga Yuria plays a role of Fangire again, but under different name and Fangire form.
Narutaki stated that he has no intentions to go against Tsukasa. However, he might have something different instead of making an immediate move.
Tsubaki Takayuki reprised his role as Kenzaki Kazuma from 2004 Kamen Rider Blade series.
Apollo Geist is now known as Super Apollo Geist.