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Play The Grim Adventures of Billy & Mandy (US edition · English) Online
The Grim Adventures of Billy & Mandy
Play The Grim Adventures of Billy & Mandy online and revisit the GBA side-scrolling brawler with Story, Mission and Tutorial modes. Learn the genuine handheld controls, opening route and a practical first objective before you begin.
Browser play

Game Boy Advance (GBA) — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| L / R | Q / E |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play The Grim Adventures of Billy & Mandy
Quick start
Select Tutorial from the Main Menu first and follow the prompts for attacks, jumps and Mojo actions. Then choose Story Mode; the opening places Billy on the hunt for Mojo Balls, and clearing stages unlocks more characters. If you prefer short goals, Mission Mode begins with Tier 1 Mission 1 and states a specific task such as finding treasure or defeating a number of enemies before time expires. Earned Mojo Balls open more missions, so complete the objective before chasing score multipliers.
Controls
Left/Right moves the character. A is the first attack/use-weapon button and B is the second; sequences of A and B perform character-specific combos. L performs a Mojo Attack or taunt, and R jumps. Press R again in the air for a double jump; press Down in the air after jumping for a higher Super Jump that damages enemies on landing. Menus use D-Pad, A to select and B to return.
The Grim Adventures of Billy & Mandy 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 · gba
- 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.