Gamer Driver

Gamer Driver (ゲーマードライバー) is a transformation belt for the Ex-Aid Riders.

History
A Gamer Driver is being transported by Asuna Karino when she runs into Emu Hojo, who takes and uses the Driver to become Kamen Rider Ex-Aid to save Sota Suyama from the Bugster infection. At the same time, Hiiro Kagami has already been in possession of one for an unknown period of time.

Transformation

 * By inserting an active Rider Gashat into the right Gashat Slot, the user is able to transform into a Level 1 Kamen Rider.
 * By opening the Actuation Lever to reveal the High Flash Indicator projecting a transformation screen into the air in front of the Rider, a Level 1 Rider is able to level up to Level 2 by passing though the screen.
 * By closing the Actuation Lever, a Level 2 Rider can be reversed to Level 1.
 * By closing the Actuation Lever after activating a Rider Gashat, a Level 2 Rider will not be reversed to Level 1, but will be able to insert the Gashat into the left Gashat Slot and reopen the Actuation Lever to level up to Level 3.
 * By closing the Actuation Lever and remove the Rider Gashat, a Level 2 Rider's transformation will be canceled. Similarly, a Level 1 Rider can also cancel his transformation by removing the Gashat. This possibly means that a Kamen Rider cannot perform a Critical finisher while in Level 1, without an additional Gashat.

Playable games
It is revealed that the Gamer Driver has a set list of playable games from corresponding Rider Gashats, and when a game's victory condition is fulfilled a projection from the belt states "Game Clear!" over the corresponding image of the Gashat in the Driver.
 * Mighty Action X
 * Taddle Quest
 * Bang Bang Shooting
 * Bakusou Bike
 * Gekitotsu Robots
 * DoReMiFa Beat
 * Giri Giri Chambara
 * Jet Combat
 * Shakariki Sports
 * Drago Knight Hunter Z

It is still unclear how Game Clears are counted.
 * In episode 2, after Brave cleared the Taddle Quest, Mighty Action X is seen to have already been cleared.
 * In episode 3, after Snipe cleared the Bang Bang Shooting, none of other games come with a "Game Clear" title.
 * In episode 4, after Ex-Aid and Lazer cleared Bakusou Bike together, all of Mighty Action X, Taddle Quest and Bang Bang Shooting are seen to have already been cleared.
 * In episode 5, afrer Ex-Aid cleared the Gekitotsu Robots, all of Mighty Action X, Taddle Quest, Bang Bang Shooting and Bakusou Bike are seen to have already been cleared.

Switchable Stages
By pressing the button on the Kimewaza Slot Holder without any Gashat inserted in it, the gamer can choose one setting from an offered list. It completely rewrites the Game Area, effectively teleports all participants to another battlefield.
 * A modern, bright city.
 * A racetrack.
 * A dark city at night.
 * A blue sky.
 * A beach.
 * A lake surrounded by trees.
 * A millitary shooting area.
 * A scrapyard.

Selectable Characters
After inserting a Rider Gashat, Riders select their armor from a spinning array of ten profile images. It is possible that the forms the Rider could use are perhaps independent of the active Rider Gashat, and the gamer can choose his favorite character from a set list before the transformation begins, but this concept has yet to be explored onscreen.
 * Ex-Aid Action Gamer Level 1
 * Brave Quest Gamer Level 1
 * Snipe Shooting Gamer Level 1
 * Lazer Bike Gamer Level 1
 * Grayed Ex-Aid Action Gamer, seemingly Level 1
 * Grayed Brave Quest Gamer, seemingly Level 1
 * Grayed Snipe Shooting Gamer, seemingly Level 1
 * Grayed Lazer Bike Gamer Level 1
 * Two generic silhouettes with question marks