Because of the large company, Yggdrasill Corporation setting up shop in the once bustling city of Zawame (沢芽市,Zawame-shi?); the community started to become more like a jōkamachi (城下町,castle town?). To escape the feeling of being under castle authority, dance crews were formed by young people to bring joy back to the public. Along with this is a popular game that uses the mysterious Lockseeds that contain animals called Inves that are said to come from another dimension.
As the game becomes more popular, tears in reality begin to open that bring the Inves from their home dimension to Earth. Kouta Kazuraba, a young man who recently quit his dance crew Team Gaim (to help his sister Akira Kazuraba), finds a special Lockseed and the Sengoku Driver to become an Armored Rider, named Kamen Rider Gaim. He must fight the sudden appearance of the Inves, but also against other Armored Riders, effectively becoming a Sengoku period-like conflict for only one victor to prove themselves that they have the right to possess the power of the Helheim Forest, the proverbial forbidden fruit.
The episodes in this Kamen Rider Series installments incorporate the name of a fruit somewhere early on in the series, as well as 2 exclamation points in the title also early on, one for the exclamation, and the other for the other half of the episode title. Episode 30 takes place between Episode 28 and Episode 29, serving as a promotional episode.
The series is divided into story arcs titled Sagas (編,Hen?), much like a manga/anime series.
This is the first Kamen Rider series since Kamen Rider Kiva whose title is not an English word nor based on an English word.
While the Gaim Riders' motif is fruit, it is not the first series to have a Rider with a fruit motif. The first one is Kamen Rider Den-O, with the peach-themed Sword Form.
This Kamen Rider series does not intend to strictly follow the two-episode story arc structure that has been part of the Kamen Rider franchise since Den-O.
Most of the Riders' Transformation segments are similar to the Riders from Den-O.
Coincidentally, the voice for one of the Drivers and the Narrator are former Imagin voice actors from Den-O.
With a total of at least eleven Riders known to appear in the series (thirteen counting it's accompanying movies) plus the Kurokage Troopers, as of late January 2014, Gaim has not only has more Riders than any Neo-Heisei series, but has caught up to Ryuki (which had a total of 13 Riders, along with the 2 Alternatives) and Kabuto(which had 11 Riders, not counting ZECTroopers), and is catching up to Hibiki (which had 19 Riders, more if you count the novel and S.I.C. saga) as the series with the most Riders in the Heisei era and the franchise overall.
Interestingly before episode 32, this series is more focused on Kamen Riders battling each other than Kamen Rider Ryuki.
Later since episode 32, the series' story becomes something similar to Ryuki's USA adaption Kamen Rider Dragon Knight, where most of All Riders are gathered in form of an alliance, with one/two Rider(s) on a villain side.