Wonder Boy III: Monster Lair Genesis box art

Sega Genesis / Mega Drive · Platformer / Adventure

Wonder Boy III: Monster Lair

Deep cut

SystemSega Genesis / Mega Drive
GenrePlatformer, Adventure
DeveloperWestone
PublisherSEGA
Players1–2 players
CommitmentAn evening or two (Roughly 1–6 hours to see it through)
SeriesWonder Boy
LegacyDeep cut · legacy score 4

Released for the Sega Genesis / Mega Drive, Wonder Boy III: Monster Lair is a platformer developed by Westone and published by SEGA. It blends platformer and adventure elements.

It is part of the Wonder Boy series; on the Genesis you can also try Monster World IV and Wonder Boy in Monster World. The series also appears on other systems with Wonder Boy in Monster Land (Master System) and Wonder Boy III: The Dragon's Trap (Master System). Westone also made Turma da Mônica na Terra dos Monstros and Mega Bomberman for the Genesis.

Wonder Boy III: Monster Lair supports up to 2 players, whether that means taking turns or going head-to-head.

Pick it if…

  • you want to run, jump and explore
  • you have time for an evening or two (roughly 1–6 hours to see it through)
  • you have a friend to play against
  • you've played the Genesis hits and want something less obvious

Maybe skip it if…

  • you get frustrated by precise jumps and limited lives

What playing Wonder Boy III: Monster Lair is like

Platformers are all about movement: running, jumping and timing your way across levels full of gaps, enemies and secrets. The best ones feel great to control within seconds and then slowly teach you to master every leap.

Tip for newcomers: Retro platformers often have limited lives and few checkpoints. Learn one level at a time, look for hidden 1-ups, and don't be shy about using a save feature when it is available.

Wonder Boy III: Monster Lair gameplay screenshot on Genesis
In-game screenshot (Genesis)

Wonder Boy III: Monster Lair cheats & codes

9 codes on file (Other codes). Here are a few Other codes codes to start with:

Infinite TimeAJ6A-AA2J
Infinite LivesAKYA-AA7N
InvincibilityATDA-AN42
1 Hit InvincibleFFC088:0010
Enable Main MenuAKNT-CA8E
Infinite CreditsAJ9T-AA7J

See all Wonder Boy III: Monster Lair cheats

Wonder Boy III: Monster Lair walkthroughs & guides

Stuck, or want to go deeper? These trusted sites have full walkthroughs, completion times and more for Wonder Boy III: Monster Lair.

If you like Wonder Boy III: Monster Lair, the Matrix also picks…

Playing Genesis games today

Genesis games are fast and immediate, and many are made for two players. Official collections and Nintendo Switch Online carry a big slice of the library, and Rec0m88 can run your own Genesis backups with online netplay.

Wonder Boy III: Monster Lair FAQ

Who made Wonder Boy III: Monster Lair?

It was developed by Westone and published by SEGA.

Is Wonder Boy III: Monster Lair multiplayer?

Yes. Wonder Boy III: Monster Lair supports up to 2 players.

How long does Wonder Boy III: Monster Lair take to play?

As a platformer, Wonder Boy III: Monster Lair typically falls into the "An evening or two" category: roughly 1–6 hours to see it through. Your time will vary with skill and how much you explore.

Read more about Wonder Boy III: Monster Lair on Wikipedia. Facts on this page are compiled from the open libretro database and Wikidata; "legacy score" reflects how widely a game is documented across Wikipedia's language editions. Spotted an error? Let us know.

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