Kamen Rider Decade: All Riders vs. Dr. Shinigami was a short film spin-off of the 2009 film Kamen Rider Decade: All Riders vs. Dai-Shocker. It was released on 1st August as part of a 7-Eleven promotional campaign.

When a new threat from outer space called Galaxy King arrives on Earth seeking an equation for a new type of energy, Skyrider, and the other seven Kamen Riders join forces to fight off the new foe and the armies of Neo-Shocker.

Serving as the true ending to Kamen Rider Decade and revealing the origins of Kamen Rider W, this movie is split into three parts. In "Kamen Rider Decade: Final Chapter", Tsukasa Kadoya fully embraces his title as the Destroyer of Worlds. In "Kamen Rider W: Begins Night", Shotaro and Philip recount the night on when it all began. Elements of both parts converge in the movie's final part, "Movie War 2010" as our heroes fight the forces of Super Shocker.

The final stage show and musical for Kamen Rider Decade. It features Kuuga and a Shocker grunt who become friends and push each other to become stronger. It (allegedly) takes place before Kamen Rider Decade episode 30.

The Badan Empire killed Ryo Murasame's older sister, and he had been cybernetically remodeled into ZX. However, he regained himself after an accident and stood up fearlessly.

A special retrospective of the two franchises, with segments making comparisons between the different characters, their weapons, powers and so forth. The final segment of the special is the short film "Super Battle: Ultraman vs Kamen Rider" The main characters, Ultraman and Kamen Rider 1 appear on the scene separately, each fighting an original kaijin and kaiju. When the two monsters are nearly defeated, they merge into a more powerful kaiju. Ultraman experiences trouble and calls for Kamen Rider 1's help. Kamen Rider 1 is then able to grow to enormous size to fight alongside Ultraman.

Professor Daidōji has developed a gravity machine called the GX Device. Unfortunately, Shocker wants it; so they attack the professor and destroy his laboratory, but come home empty-handed. Shocker's agents find out that the plans for the GX Device are with Daidōji's daughter, who is celebrating her birthday. Now the Kamen Riders, along with FBI agent Kazuya Taki, must protect Daidōji's daughter and prevent Shocker from obtaining the plans.

The special opens with Tachibana Tōbei taking some children to a Kamen Rider roadshow. Just as he's reminiscing about all the heroic modified humans he's lived alongside- Ichigō, Nigō, V3, Riderman, X, Amazon, Stronger and Tackle- the first seven Riders gradually show up to greet him in their human guises, unrecognised by the crowds. When it's revealed that the kaijin onstage are 'real', not actors, the Riders transform to save the crowd and Rider actors, uniting their power to defeat the Delzer Army's true leader, Great General Darkness in his hideout beneath the stadium.

Doctor Keitaro Shido, an acclaimed scientist, has been kidnapped by the terrorist organization Neo-Shocker to exploit his expertise in robotics technology. Desperate to escape, he convinces Neo-Shocker's command to allow him to operate on an injured camper. Explaining that he can turn the camper, Hiroshi Tsukuba into a powerful Neo-Shocker warrior, they allow Doctor Shido to operate. However, he quickly turns the tables on them, transforming Hiroshi, not into a kaijin, but the powerful warrior Sky Rider, using his newfound abilities to combat the evil Neo-Shocker menace.

As a computer virus based on Pac-Man invades Japan, a group of doctors attack Genm Corp and begin a wave of terror using stolen Proto Gashats. Ghost and Ex-Aid find themselves at the center of the fight in an effort to protect those most important to them. But they aren’t alone, as Heisei Riders from the past join them to stop Dr. Pac-Man!