YMMV: Alex Kidd
- Anticlimax Boss: Janken the Great, the Big Bad of the first game, attacks by standing perfectly still and spitting easily avoidable fireballs at you. If you stand right next to Janken, then it's actually impossible for him to hit you at all.
- Crowning Music of Awesome: The main level music of Miracle World is memorable for anyone who ever owned a Master System. There is also a full-rock version of this song by Sega's in-house band, SEGAROCKS.
- Although the music in Enchanted Castle is generally agreed to be severely lacking next to that of Miracle World, the music for the final stage has quite a few fans.
- Shinobi World features not only some awesome remixes of the music from the original Shinobi, but some very cool original music as well.
- Good Bad Bugs: Enchanted Castle has a glitch whereby players can skip bosses by pressing start as the dialogue box disappears. However, be warned that trying this on the final boss will get you trapped, forcing you to start the game over!
- It's Short, so It Sucks : One of the main criticisms of Enchanted Castle, which has barely half the stages that Miracle World had. Moreover, the stages in the former aren't really any longer than those of the latter.
- Porting Disaster: The Master System version of The Lost Stars suffers from garishly overcolored graphics, and a soundtrack that's flat-out butchered on the Master System's sound chip.note
- Surprisingly Improved Sequel: Shinobi World is pretty universally agreed to be a better game than Enchanted Castle or Hi-Tech World, and some even consider it to be the best game in the entire series.