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Icon-exaid.png This article is about a video game in Kamen Rider Ex-Aid.

"Kamen Rider Build! (RabbitTank Form transformation music)"
―Activation announcement[src]

"Gashat! Let's Ride! Metcha Ride! Mutcha Ride! What's your Ride? I'm a Kamen Rider!"
Level 1 transformation announcement[src]

"Gachan! Level Up! RabbitTank! Usagi to sensha! Best Best Match! Yay!"
Level 2 transformation announcement[src]

"A Gatcha! RabbitTank! Usagi to sensha! Best Best Match! Yay!"
Level 3 transformation announcement[src]

"Kimewaza! Rider Critical Strike!"
Kimewaza Slot Holder finisher announcement[src]

"Kimewaza! Rider Critical Finish!"
―Weapon finisher announcement[src]

"Kimewaza! (Word from other Gashat's name) Build Critical Finish!"
Gashacon Key Slasher finisher announcement[src]

Kamen Rider Build (仮面ライダービルド, Kamen Raidā Birudo) is a Gashat video game based on the Kamen Rider of the same name.



Emu activates Kamen Rider Build.

Following his encounter with Kamen Rider Build, The Last Smile Kuroto Dan, having produced an assembly of Rider Gashats based on Ex-Aid's seventeen Heisei Rider predecessors compiled into Ganbarizing in the past, Kamen Rider Ex-Aid "Tricks": Kamen Rider Genm created a Gashat based on this new Rider. Endless Game


This Gashat would later appear in Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, allowing the doctor Riders to transform despite the Enigma energy disabling their ability to transform. Originally, there was only one copy of the Gashat, but Onari managed to convince Kuroto to create more copies for the other doctor Riders to use in combat. After the battle, it is unclear what happened to these Gashats.

Build Gamer

Instead of transforming the user into a new base suit or summoning armor, the Build Gashat instead allows Riders to bypass Enigma's block on them, allowing Brave and Snipe to access their Level 2 forms, Lazer Turbo to access Level 0, and Genm to access Level X-0 without the need for Proto Mighty Action X Origin. Uniquely, these "forms" are not associated with a Level and official materials do not treat them as being distinct from the Riders' normal forms.

Kamen Rider Build Gashat

KREA-Kamen Rider Build Gashat.png

When activated, the Gashat reformats the battlefield into a Game Area. It doesn't seem to spawn any Energy Item containers.

Behind the scenes

The Kamen Rider Build Gashat was introduced on-screen in the final episode of Kamen Rider Ex-Aid and later features in the film Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders. Unlike preceeding Rider Gashats, its associated Build Gamer has yet to be visualized either on-screen or via Ganbarizing.


  • Like the Build Driver, the Kamen Rider Build Gashat is voiced by KORBY.
  • The Level 1 jingle is similar to those of other Legend Rider Gashats, but it ends with Kamen Rider instead of Legend Rider. This may be due to Build being a succeeding Rider to Ex-Aid, rather than a preceding Rider.
  • The Level 2 and 3 jingles are a remix of Mighty Action X's Level 2 jingle.
  • The Gashat for this game is the only Gashat to have identical Level 2 and Level 3 jingles that isn't a Proto Gashat.
    • It is also the only Gashat that is completely named after its Rider counterpart.

Rabbitan Bugster

Blue Glass Arrow.png See also: Rabbitan Bugster



Icon-exaid.png Kamen Rider Ex-Aid
Kamen Riders
Emu Hojo - Hiiro Kagami (Game World) - Taiga Hanaya - Kiriya Kujo - Kuroto Dan - Parado - Asuna Karino/Poppy Pipopapo - Masamune Dan - Ride-Players (Nico Saiba - Haima Kagami) - Genm (Bakusou Treasure) - Kagenari Nagumo - Ninja-Player - Black Parado
Game Scope - Gamer Driver - Kimewaza Slot Holder - Rider Gashat - Energy Items - Buggle Driver (II) - Bugster Buckle - Gashat Gear Dual (β - Another) - Rider Gauges - Rider Gashat Case - Energy Item Holder
Gashacon Weapons
Gashacon Breaker - Gashacon Sword - Gashacon Magnum - Gashacon Sparrow - Gashacon Bugvisor (II - G) - Gashacon Key Slasher - Gashacon Parabragun
Other Weapons
Flamber Saber - Ride Weapon - Fuma Sōzantō - Genin Weapon
Robot Gamer - Beat Gamer - Combat Gamer - Chambara Gamer - Sports Gamer - Hunter Gamer - Bike Gamer - Burger Gamer - Fantasy Gamer - Simulation Gamer - Maximum Gamer - Safari Gamer - Tank Gamer - Legacy Gamer - Pac Gamer - Famista Gamer - Xevious Gamer - Galaxian Gamer
Asuna Karino - Haima Kagami - Kyotaro Hinata - Ginko Yumita - Nico Saiba - Satsuki Ogimachi - Mizuki Nishikikoji - Tsukuru Koboshi
Others: Saki Momose - Sakurako Dan - Eight Kirino - Saiko Yaotome
Locations: Seito University Hospital - CR - Ministry of Health - Hanaya Game Illness Clinic - Genm Corp. - Game World - Machina Vision - Next Genome Institute
Generals: Parado - Graphite - Ren Amagasaki - Gamedeus
Movie-exclusive: Michihiko Zaizen - Pac-Man Virus - Hatena Bugster - Soji Kuruse - Kazushige Ryuzaki - Ageha Takeda - Johnny Maxima - Nebula Bugster
Stageshow-exlusive: Futago Bugster
Regular Bugsters: Bugster Virus - Bugster Union - Salty Bugster - Aranbura Bugster - Revol Bugster - Motors Bugster - Collabos Bugsters (Gekitotsu - DoReMiFa - Giri Giri - Jet - Kamen Rider Genm series) - Burgermon Bugster - Gatton Bugster - Vernier Bugster - Kaiden Bugster - Charlie Bugster
Regular Games: 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 - Dangerous Zombie - Mighty Brothers XX - Perfect Puzzle - Knock Out Fighter - Perfect Knock Out - Ju Ju Burger - Night of Safari - Bang Bang Tank - Taddle Fantasy - Bang Bang Simulations - Taddle Legacy - Maximum Mighty X - Kamen Rider Chronicle - Toki Meki Crisis - Hyper Muteki - Doctor Mighty XX - Mighty Creator VRX - Hurricane Ninja - God Maximum Mighty X - Knock Out Fighter 2 - Zombie Chronicle - Mighty Novel X
Legend Rider Games: Let's Go Ichi Gou! - Adventure Guy Kuuga - Agito of the Sun - Mirror Labyrinth Ryuki - Moshi Moshi Faiz - King of Poker Blade - Taiko Master Hibiki - Insect Wars Kabuto - Time Express Den-O - DokiDoki Makai Castle Kiva - Barcode Warrior Decade - Detective Double - Jungle OOO - Space Galaxy Fourze - Magic The Wizard - Toukenden Gaim - Full Throttle Drive - Kaigan Ghost - Kamen Rider Build - Ganbarizing
Legend Games: Pac Adventure - Famista - Xevious - Taiko no Tatsujin - Galaxian
Other Games: Hatesate Puzzle - Buddhist Priest of Temple - Chou Super Hero Taisen - Chou Shocker Taisen - Bakusou Treasure - WayoseTUNE - Nazo Toki Labyrinth