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Play Chou Mashin Eiyuu Den Wataru - Mazekko Monster (Beta / SGB Enhanced · Japan edition · English) Online
Chou Mashin Eiyuu Den Wataru - Mazekko Monster
Play Chou Mashin Eiyuu Den Wataru - Mazekko Monster online. Find mysterious seeds and raise Mon-Pets in bottles, observing food, water, rest and mood instead of commanding battles.
Browser play

Game Boy (GB) — 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 Chou Mashin Eiyuu Den Wataru - Mazekko Monster
Quick start
START begins. Choose new game only when ready to replace the old save, get a seed from Himiko, select the bottle with A and water it when its icon asks. Later check food/rest and START’s map.
Controls
Directional pad: move the cursor. A: confirm selection. B: cancel or go back. START: world map; name entry on pet status. SELECT: cancel name entry.
Chou Mashin Eiyuu Den Wataru - Mazekko Monster — About this game
Find mysterious seeds and raise Mon-Pets in bottles, observing food, water, rest and mood instead of commanding battles. Caring for a creature changes its growth and can lead to evolution; combining different groups opens the search for new kinds. Expanding the collection also opens more of the world map. Check the pet’s icons before choosing its next activity, because neglect can spoil its condition and make the next experiment less predictable.
Chou Mashin Eiyuu Den Wataru - Mazekko Monster Game manuals
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 · gb
- 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.