Errors

[Yawackhary]

https://www.spriters-resource.com/arcade/wbiml/

This game's proper name is "Wonder Boy: Monster Land", Wonder Boy in Monster Land is the name of the Master System port.

It's one of those confusing cases where both names have been used officially to describe the arcade game.

While it says "Wonder Boy: Monster Land" on the title screen both in Japanese and English as well as the Switch Sega Ages release, Sega themselves called it Wonder Boy in Monster Land for the 360 release and the delisted PS3 release. I'll go for just Monster Land as well.

(As a note, the rare official English translation of the arcade original was not available at the time, even MAME used in Monster Land until more recently. Activision also used a few variations of the name for the home computer versions of this game and yeah, it gets really messy. Super Wonder Boy [manual], Super Wonder Boy in Monster Land [cover], Super Wonder Boy: Monster Land [Amstrad title], Wonder Boy: Monster Land [C64 title], Wonder Boy in Monsterland [manual, yep even that's not consistent], Wonderboy in Monsterland [Amiga/Atari ST title, Amstrad/Spectrum in game], etc, etc. Even the Master System version isn't just Wonder Boy in Monster Land either due to various cartridge versions both on the label and on the title screen...)