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Play Kaijuu Monogatari (Japan edition · Japanese) Online
Kaijū Monogatari
Play the Famicom version of Kaiju Monogatari online. Go on an adventure where you exchange passes between the boy, Kupikupi, Poyon, and Babu to join the four of them and strengthen their equipment.
Browser play

Nintendo Entertainment System (NES) / Famicom — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Kaijuu Monogatari
Quick start
On the start screen, use the cross button to select "Start" and press START. For the boy's name, select a letter with the cross button and enter it with A. If you make a mistake, you can return it by pressing B or "Undo". After listening to the king's story, face the townspeople, press A to open the command, and use ``Talk'' to gather information. At first, fight weak enemies near the castle or town, and when your health is low, go to the hotel. Please use the ``Pass'' to switch to another protagonist, and the ``Awakening Room'' in town to record your journey.
Controls
The cross button is for movement and command selection. A is open command, confirm, send message, B is cancel. On the start screen, select settings and press START. To switch operations, press A to open the menu, select ``Pass'', and press A to execute. At the start, the players take turns in the order of boy - Kupikupi - Poyeon - Babu, and after joining, the first party goes to the end. In manual battles, select targets with left and right, and actions with up and down. Save in the ``Awakening Room'' or Kupikupi's ``Tokugi'' after learning, and select ``Continue'' to resume.
Kaijuu Monogatari — About this game
``Kaiju Monogatari'' is an RPG in which a boy with a fire shell, Kupikupi, Poyon, and Babu take turns to take on the great demon king Fat Badger of Sheldorado. The main characters start from separate castles, so they not only travel alone, but also consider their respective growth and current locations as they aim to join together. With the friends I met, I formed a party using the word ``au'' from the ``story.'' In battle, you can choose between auto mode, where you attack with only weapons, and manual mode, where you can also command magic and tools. In the early stages, the basic idea is to collect experience points and pearls around the town, then recover and equip your equipment at the hotel. Recording can be done in the "Awakening Room", and once Kupikupi can use special skills, it will be possible to save while traveling.
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · nes
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.