!! The series in general
** The Mark III version was titled ''Super Wonder Boy'', presumably to distinguish it from the earlier SG-1000 version released exclusively in Japan, since the Mark III was backwards-compatible with all SG-1000 games (also doubles as an UpdatedRerelease, as two extra areas were added and the dolls were given purpose besides points).
** For some reason, the Game Gear version (based on the above release) was titled ''Revenge of Drancon'' in North America (it was simply called ''Wonder Boy'' everywhere else).
* MorePopularSpinoff: The ''Monster World'' sub-series. There's a reason why the [=PS2=] compilation was titled the ''Monster World: Complete Collection'' and not the ''Wonder Boy Collection''.
* DemonicSpiders: The frogs (which are extremely hard to hit before they jump into you) and the literal spiders that appear in droves in later stages.
* GoddamnedBats: Bees, rocks, bats, octopuses, swordfishes, etc.
!!''Wonder Boy in Monster Land''
* PortingDisaster: The Amiga version had stumpy graphics and tinny sound, did not label shop doors, and had a small play area to fit the status border. (The Master System version instead compressed the HUD into a small bar and put the rest of the info in a pause menu, resulting in a much more playable screen size.)
!!''Wonder Boy Returns''
* ItsTheSameNowItSucks: The general fan consensus was that returning to the original gameplay was unnecessary, as it was not anything that ''Monster Lair'' or the ''VideoGame/AdventureIsland'' series had already done better. It doesn't help that the game looks more like a dated budget mobile game and was released in the shadow of ''VideoGame/MonsterBoyAndTheCursedKingdom'' and the ''Wonder Boy: The Dragon's Trap'' remake.