* GameBreaker: Magic spamming in ''Seiken Densetsu 3''. Also, the Kevin bug allows Kevin to shoot to absurd levels of strength if he transforms into a beastman at exactly the right moment.
** While it takes longer, Magic spamming (particularly once you get Luna) is similarly game breaking in ''VideoGame/SecretOfMana''. Even more so than ''Seiken Densetsu 3'', considering the fact that the spell animations freeze the enemy in place, so casting with the right rhythm can allow the Sprite to kill any enemy before they can move.
*** ''VideoGame/SecretOfMana'' has a damage cap of 999. By the time you can actually reach that with spells, most bosses will have 3000+ HP, but then again, only two bosses in the entire game have over 5000HP. Also if you leveled up spells to "Level 9" (8:99), if you invoke a Level 9 animation, you effectively can't spam anymore.
*** Killing a boss in 4-6 hits is pretty dang game breaking. The level 9 animations slow down the magic spam but don't change the fact that the boss is being killed in 4-6 hits.
*** There's also the Sword Orb bug in ''VideoGame/SecretOfMana'' that you can exploit as soon as you get reliable means of transportation. If you exploit long enough, gives you a sword that can pretty much kill enemies in two hits, at most.
** Having [[spoiler: Blackpearl]] as your NPC assistant in ''VideoGame/LegendOfMana'', since her support ability boosts your super meter to 100%. If you bother to learn ItemCrafting, you can also deck yourself out with an arsenal of god-slaying that makes even the No Future Mode (ALL enemies lvl 99) a breeze.
* PlayerPunch: Some parts of some games are so depressing it hurts the psyche:
** [[spoiler: The Big Bad killing your ExpositionFairy]] in ''VideoGame/SeikenDensetsu3''.
** ''All three'' major story arcs of ''VideoGame/LegendOfMana''
** What happens to UnluckyChildhoodFriend Ritzia in ''VideoGame/DawnOfMana''
** For an 8-bit game that came out in a time where Nintendo heavily censored most games, FinalFantasyAdventure has a '''lot''' of tragic [[PlotlineDeath Plotline Deaths]]. Naturally carries over in the remake ''SwordOfMana'' as well.
** [[spoiler:The death of the Mana tree just after finding out she was your mother]] in ''Secret of Mana''. Also just about anything involving Purim (the female player character) and Dyluck.
* SequelGap: [[VideoGame/DawnOfMana Seiken Densetsu 4]] was the first numbered game in the series in 11 years since VideoGame/SeikenDensetsu3. This isn't noticeable in the overseas ports since they exclusively used the [[IdiosyncraticEpisodeNaming idiosyncratic]] -Of Mana
* SurprisinglyImprovedSequel: ''Seiken Densetsu 2'' (''VideoGame/SecretOfMana'') and ''3'' were both vast improvements over their predecessors. (''Seiken Densetsu'' was first released in the US as the underwhelming ''Final Fantasy Adventure'')
* ThatOneBoss: Spiky Tiger from ''VideoGame/SecretOfMana''; fighting Vadise and Sierra in ''VideoGame/LegendOfMana'' can be a pain as well since Sierra will revive if you can't defeat Vadise quickly enough.
** ''VideoGame/LegendOfMana'' also has the two Tropicallo fights where you can't attack it directly but can only take off a portion of its HP every time you defeat one of its tentacles. One casts magic at you nonstop unless you knock it off its perch, in which case it self destructs and takes a massive chunk of your HP, and the other attacks aggressively. Both continually respawn until the Tropicallo dies.
** ''VideoGame/SeikenDensetsu3'' had the second fight against the Bill and Ben, two ninjas who will always counter any spell (and {{Limit Break}}s count as spells) with their ninjitsu.
* {{Vaporware}} - ''Seiken Densetsu: The Emergence of Excalibur'' was a Famicom Disk System game that started development in 1987. Its goals were too big for its britches, and the game collapsed under its own weight. A completely unrelated title named ''Gemma Knights'' was then renamed and released on the Game Boy as the series-starting game we're all familiar with; the creators thought the name Seiken Densetsu was too slick of a trademark to lose. More info can be found [[http://www.lostlevels.org/200311/200311-square.shtml here]].