It was originally released to video on March 22nd, 1993. The OVA had a Blu-Ray release included in the Shin Kamen Rider, Kamen Rider ZO and Kamen Rider J Blu-Ray Box set in Japan.
Kamen Rider SD: Kaiki!? Kumo Otoko features examples of:
- Alternate Continuity: SD is one to the live-action Kamen Rider TV franchise.
- Antagonist Title
- Batman Cold Open: The OVA opens with Battle Riders defeating Sasori Otokonote and his mooks.
- Big Bad: Kumo Otokonote , who was the very first Monster of the Week in the original series.
- Big Damn Heroes: The Mechanic Riders come to assist the Battle Riders against Gran Shocker's Terrible Trio, running the monsters over with their Cool Bikes.
- Co-Dragons: Gran Shocker has eight: Ambassador Hell & Ambassador Darkness, Doktor G, Apollo Geist, Ten-Faced Demon Gorgos, General Shadow, Shadow Moon, and General Jark.
- Continuity Cameo: Both Hachi Onnanote of Shocker and Electro-Wave Human Tackle appear in Operation Proposal.
- Continuity Cavalcade: In addition to Shin, numerous past (mostly Shocker) monsters appear at the Sports Club, including Chameleon, Dokugandar, Kuragedarl, Egyptus, Dokudahlian, Zanburonzo, Kinokomorugu and Fire Kong.
- Defeat Equals Explosion: As ever for Kamen Rider, this is played straight for monsters defeated by the Kamen Riders.
- Demoted to Extra: Kamen Rider Shin (Kamen Rider #13) makes a cameo at the Sports Club.
- Exactly What It Says on the Tin: SD follows the Super-Deformed Kamen Riders.
- The Faceless: In this continuity, the Kamen Riders do not appear in their human forms, though Riderman remains with the lower half of his face exposed.
- Greater-Scope Villain: Majin Great Leadernote of GranShocker, who appears to be a new incarnation of the original Great Leader of Shocker.
- Home Base: The Rider Carrier serves as home to the Riders and Tachibana.
- Humongous Mecha: On closer inspection, the Great Leader's body appears to be this, with a caped figure in the forehead. In the concluding chapter of the manga, it was revealed that the "Great Leader" was indeed a mecha piloted by none other than Doctor Shinigami, an Shocker executive.
- Legion of Doom: Gran Shocker, an alliance of Kamen Rider villains.
- Malicious Misnaming: RX refers to Shadow Moon of Gran Shocker as "Sunshine Moon".
- The Mentor: Tobei Tachibana, whose live-action incarnation mentored the Seven Legendary Riders, acts as this for all 11 Riders here.
- Mooks: Gran Shocker's Sentoninnote wear blue and yellow uniforms with the Gran Shocker insignia on their forehead, appearing not too dissimilar to the Gel-Shocker Sentonin from the original series.
- Super-Deformed: Take a guess what "SD" stands for.
- Supervillain Lair: Gran Shocker are based at the Gran Shocker Tower.
- Terrible Trio: Kumo Otoko forms one with Destron monsters TV Fly and Cannon Buffalo.
- What If?: ...the Showa Kamen Riders were Super-Deformed?
