Monster World IV
A landmark action game for the Sega Genesis, Monster World IV combines tight controls with engaging gameplay. Its enduring appeal lies in the perfect balance of challenge and reward.
- Developer
- Westone
- Released
- 1994
- Platform
- Mega Drive
- Genre
- Action
- Players
- 1P
- Rating
- 4.5 / 5 (1.6K)
- Last updated
Monster World IV Controls — Mega Drive Keyboard Keys
Default keyboard bindings for Monster World IV on our in-browser Mega Drive emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | A | Primary action (jump / confirm) |
| Z | B | Secondary action (attack / cancel) |
| S | C | Tertiary action |
| A | X | Quaternary action |
| Q | Y | Fifth button |
| W | Z | Sixth button |
| Enter | Start | Start / Pause |
These bindings cover the 6-button Mega Drive controller. Most older titles only use buttons A/B/C; the extra X/Y/Z buttons matter for Street Fighter II and other 6-button fighters.
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Monster World IV Longplay & Gameplay Videos
Watch a full playthrough of Monster World IV on Mega Drive before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Monster World IV" Mega Drive longplay 1994
Monster World IV Cheat Codes
24 community-curated cheats for Monster World IV. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Infinite Energy
AJJT-CA8T -
Region Bypass
A22T-AA62 -
Infinite Gold
FFDA80:00FFALFA-EA98+ALZT-CA60 -
Infinite Elixir
FFDAA8:00FFV0WT-CGSYALWT-CA9Y -
Invincible
FFCC70:005DRYHT-C60C -
Enemies Do No Damage
AAHT-CA8N -
Coins dropped worth 65,535
A8NA-EEP8 -
Fast Walking + High Jump
LAKA-CS4J -
Stay Invincible (Flashing) Twice As Long After Getting Hit
96KA-CAAE -
Once You're Hit, You'll Stay Invincible (Flashing) Until You Kneel Before A Statue To Recover Your Health, Or When You Go To A New Level
AJKA-CA3R -
Life Drops Are Worth 2 (Instead of 1)
SCNT-FJTW -
Life Drops Are Worth 4 (Instead of 1)
SCNT-FTTW
Show 12 more cheats Show fewer
-
Life Drops Are Worth 8 (Instead of 1)
SCNT-FATW -
You Only Need 5 Life Drops For An Extra Heart (Instead of 10)
A0NT-EAA2 -
You Only Need 2 Life Drops For An Extra Heart (Instead of 10)
ALNT-EAA2 -
Have 39,000 Gold
FFDA80:9999 -
Max Blue Hearts
FFDA7A:000F -
Infinite Blue Hearts
FFDA76:000F -
High jump.
EAKT-CAHA -
Super high jump.
CAKT-CAHA -
1 Hit Kill Enemies
PEVA-AETA -
1 Hit Kill Bosses
PDDT-CE1G+PABT-EEYG+PAET-EE1L -
Untouchable
RYTT-A6V4+RZ7A-C612+RZ6T-C6Y0 -
Infinite Red Hearts
FFDA84:0003
External references
Frequently Asked Questions
When was Monster World IV released?
Monster World IV was released in 1994 for the Mega Drive.
Who developed Monster World IV?
Monster World IV was developed by Westone, available to play in your browser on RetroGameSpace.
How many players does Monster World IV support?
Monster World IV is a single-player Action game for the Mega Drive.
What type of game is Monster World IV?
Monster World IV is a Action game for the Mega Drive, playable instantly in your browser — no downloads, no installs.
How can I play Monster World IV for free?
Open this page and click "Play Now" — Monster World IV runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Monster World IV in the browser?
No. Monster World IV streams from a public archive into a browser-side Mega Drive emulator. Nothing is installed on your computer.
Can I save my progress in Monster World IV?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Mega Drive cartridge supported.
Does Monster World IV work on mobile devices?
Yes — the Mega Drive emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Monster World IV this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Monster World IV. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
