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Play Monster Party (US edition · English) Online
Monster Party
Play Monster Party online: reflect attacks with Mark's bat, transform into Bert and explore strange boss rooms in this offbeat NES action game.
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 Monster Party
Quick start
Use SELECT to choose START on the title screen, then press START. A advances the introduction; START skips it. Walk right to the first door and press Up. Against the plant, time B swings to send its bubbles back. Visit the other boss rooms before looking for the stage exit key. Pick up capsules for a temporary transformation and hearts for health. Write down the password after finishing the round.
Controls
Left/Right: move. Down: lie down; Down+Left/Right: crawl. Up: enter a room. A: jump; while transformed, press repeatedly to fly. B: swing Mark's bat, or fire Bert's laser when transformed. START: start, pause or resume. SELECT: choose START/CONTINUE at the title. For a password, choose letters with the D-pad and A, then select END and press A.
Monster Party — About this game
Monster Party sends a baseball-playing boy into a world where grinning scenery gives way to grotesque creatures and odd conversations. Rather than simply reaching the far end of a stage, Mark must investigate rooms and resolve their boss encounters to obtain the exit key. His bat works at close range and can knock enemy projectiles back, making timing more useful than blindly rushing forward. Capsules temporarily change him into Bert, who shoots lasers and can fly with repeated jumps. The first round sets the tone with a bubble-spitting plant, a surprisingly inactive giant spider and an energetic pumpkin ghost. Hearts restore health, and completing a round provides a password for returning later.
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.