When did Monster World IV release?

Monster World IV was first released on April 1, 1994.

Monster World IV

Apr 1, 1994PlatformRole-playing (RPG)PlayStation 3 PlayStation 4 Wii Sega Mega Drive/Genesis

Monster World IV — frequently asked questions

What platforms is Monster World IV on?: Monster World IV was released on PlayStation 3, PlayStation 4, Wii, Sega Mega Drive/Genesis.
When did Monster World IV release?: Monster World IV was first released on April 1, 1994.

About Monster World IV

Experience the fourth chapter in the classic Monster World series! One day, a young, green-haired girl names Asha, hears spirits calling out for help. Upon hearing the spirits, she leaves her village and sets forth on a grand adventure into Monster World. One her journey, she comes across a small blue monster named Pepe and a magical Genie. Together they must fight through Monster Land to defeat evil and save the troubled Elemental Spirits.

Summary via IGDB.

Game details

Platforms: PlayStation 3, PlayStation 4, Wii, Sega Mega Drive/Genesis
Developer: Westone
Publisher: Sega
Game modes: Single player
Themes: Action, Fantasy
Series: Wonder Boy

Details via IGDB.

Reception

IGDB rating

80/100

from 18 ratings

Every version compared

Prices, contemporary reception and the studio credited for each release

Platform	Year	Loose	Complete	Sealed	Fake risk
Sega Genesis	1994	$77	$200	—	Medium

Also released on: PlayStation 3 · PlayStation 4 · Wii · Sega Mega Drive/Genesis. We haven’t priced or authenticated those versions yet.

Collector value & authenticity

Sega Genesis · PriceCharting sold data · Verified 2026-10-29

Loose

$77

Complete

$200

Sealed

—

What it needs to play

Some modesSave battery (inside the cartridge) — saves to memory kept alive by a battery inside the cartridge; if that battery has died, saves are lost (MAME cartridge records).

How often it sells

Loose: about 4 times a year
Complete: about once a month
Sealed: rarely — fewer than one recorded sale a year

Sales frequency from PriceCharting's completed-sale records, as of 2026-10-29.

Price over time

Loose
Complete

A loose copy sold for about $136 in Oct 2019, $150 five years ago, and $77 as of Oct 2026.

Show as table

Month	Loose	Complete
Jan 2020	$121	$156
Jan 2021	$165	$194
Jan 2022	$170	$173
Jan 2023	$122	$151
Jan 2024	$130	$151
Jan 2025	$60	$155
Jan 2026	$77	$188
Oct 2026	$77	$200

Monthly price estimates from PriceCharting's completed-sale records, sampled quarterly, through Oct 2026.

Release record

Territory	Date	Product number
Japan	1 April 1994	G-5519

Source: Product numbers: MAME's Mega Drive software list and the No-Intro serial records in the libretro database, published where both agree on the same cartridge dump, or from the libretro records alone where MAME lists no number for that dump. Board and ROM numbers: MAME's software list

Region: JP
Released: 1994
Authenticity: Med

Modern re-releases, such as Sega Ages, the Genesis Mini and Nintendo Switch Online, are not tracked hereMedium counterfeit risk

Sega Genesis prices, all games & how to spot a fake

A lovely Westone action-adventure that came out only in Japan, and every US-style cart of it is a reproduction.

Monster World IV is an action-adventure platform game developed by Westone and published by Sega for the Mega Drive, released only in Japan on 1 April 1994. It is the sixth Wonder Boy game and the fourth in the Monster World subseries.

Before you buy

It came out only in Japan, so the genuine cart is the Japanese Mega Drive one, with a notch on the left and ridged edges, and a different shape from a Western cart that needs an adapter or two plastic tabs removed from a Western console's slot. Every US-style cart of it is a reproduction. The cartridge saves to a battery inside it, so test that a save holds; a replaced battery is a normal repair, not a sign of a fake. For a copy at this price ask for a photo of the board.