Games of the 8-, 16- & 32-bit era

Wonder Boy III: Monster Lair

Title	Wonder Boy III: Monster Lair
First release	1988
Developer	Westone Bit Entertainment
Publisher	Sega
Platforms	Arcade, Mega Drive / Genesis, PC (Windows), PC Engine / TurboGrafx-16
Genre	platformer
Also known as	Wonder Boy III · Wandā Bōi Surī: Monsutā Reā
Players	1–2 players
Co-op	Yes
ESRB rating	E Everyone
Releases	Arcade: 1988-11-16 Mega Drive / Genesis: 1990-12-22 (NTSC-J), 1991-04-01 (PAL)
Wikidata ID	Q3569784

Wonder Boy III: Monster Lair is a side-scrolling action game developed by Westone Bit Entertainment that was originally released for the arcades by Sega in 1988. It is the third game in the Wonder Boy series and the last one released for the arcade. A console adaption was made by Hudson Soft, released in 1989 in Japan for the PC Engine CD and the subsequent North American release on the TurboGrafx-CD dropped the 'Wonder Boy III' title. It was also converted and released by Sega for the Mega Drive in Japan and Europe in 1991. Both the TurboGrafx-CD and Mega Drive versions have been re-released for the Wii Virtual Console.

Description: TheGamesDB (community-contributed, no licence stated; internal use only)

View on Wikidata Read on Wikipedia

Facts from Wikidata (CC0), gaps filled from TheGamesDB and Arcade Database (ADB). Only retro platforms tracked by this site are listed; the year is the earliest release date recorded on Wikidata.

Sources

Wikidata (Q3569784) · last updated 2026-09-27 · CC0

TheGamesDB (8755) · last updated 2026-07-18 · no licence stated · internal use only

TheGamesDB (4732,129953) · last updated 2026-07-18 · no licence stated · internal use only

Arcade Database (ADB) (wb3) · last updated 2026-10-06 · CC BY-NC-SA 3.0 · internal use only

Arcade Database ADB

MAME romset	`wb3`
Title at ADB	Wonder Boy III - Monster Lair (set 6, World, System 16B) (8751 317-0098)
Manufacturer	Sega / Westone
Year	1988
Genre	Platform / Shooter Scrolling
Players	2
MAME driver status	GOOD

Wonder Boy III: Monster Lair – Flyer — Flyer

Wonder Boy III: Monster Lair – Marquee — Marquee

Wonder Boy III: Monster Lair – Title — Title

Wonder Boy III: Monster Lair – In-game — In-game

Artwork: ADB (Arcade Database); artwork © original manufacturer (Sega / Westone); snaps by ProgettoSnaps via ADB. Non-free, internal use only (hotlinked, not downloaded).

Scraping using Arcade Database by motoschifo · CC BY-NC-SA 3.0 · romset via Wikidata P2451 (wikidata-qid) · fetched 2026-10-06 05:15 UTC · no fields filled (other sources take precedence)

Wonder Boy III: Monster Lair – box art (front)

Source: TheGamesDB (user-uploaded) · © Sega · internal use only

1 / 5 Box art Box art (front)

Image credits

Box art, Screenshots, Logos (5): Source: TheGamesDB (user-uploaded) · © Sega · internal use only. TheGamesDB page

Sprites

No sprite sheets yet. Find sprites on The Spriters Resource ↗ /

Videos

PC Engine Longplay [243] Wonder Boy III: Monster Lair

World-of-Longplays · PC Engine / TurboGrafx-16 version · longplay · 54:05auto-matched
Watch on YouTube ↗ · auto:channel-harvest, checked 2026-10-25 18:42 UTC

PC Engine CD Longplay [071] Wonder Boy III: Monster Lair (US)

World-of-Longplays · PC Engine / TurboGrafx-16 version · longplay · 54:05auto-matched
Watch on YouTube ↗ · auto:channel-harvest, checked 2026-10-25 18:42 UTC

"Auto-matched" videos were found automatically (title + platform match via the YouTube Data API) and may occasionally be wrong. Videos are hosted by YouTube (embedded via youtube-nocookie.com; nothing loads from YouTube until you press play) and belong to their channels.