History YMMV / StreetpassMiiPlaza

* ThatOneBoss: Does it need to be said about Warrior's Way's final boss?

* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting your hero and your Play Coins. Thankfully removed in the update that included the additional games, considering they're by far the most expensive thing that consumes Play Coins in any of the games.

* TheScrappy: Dark Green Miis, whose abilities are practically useless in both Find Mii and Mii Force. In ''Find Mii'' they double your next warrior's level. It sounds nice but unless you have a bunch of level 1's and the Dark Green is in front then its worthless. In ''Mii Force'' Dark Green gives a bouncing ball which does bad damage, bad attack radius, and offers no defense like Brown or White shirts do.
** In Warrior's Way, people who have no street passes, thus their army consists of a single useless soldier.
* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting your hero and your Play Coins. Thankfully removed in the update that included the additional games, considering they're by far the most expensive thing that consumes Play Coins in any of the games.
* StopHelpingMe: Mr. Mendel quickly falls into this. After playing the game for a while, many players will be shouting at Mr. Mendel to just shut up after repeating the same piece of advice countless numbers of times and just wanting to get to greeting the guests.
** It's even worse after one has grown all 80 plant breeds, because he'll still offer advice on how to grow new breeds.

** Warrior's Way and its "defeat 300 visiting monarchs" plaza ticket. Depending on where you live, this can be almost impossible to achieve. And even in an area with lots of 3DS users, it can still take a very long time.

* DemonicSpiders: Any enemy that takes very litte damage from your attacks, or uses any type of magic (e.g Fortifying Magic, Mirage Magic, Level Down Gas, Nullifying Magic) in Streetpass Quest 2 / Find Mii 2.

** Rooms covered in darkness can ONLY be passed with White magic, forcing all other heroes in front of the White hero to flee immediately upon entry. Unlike shield rooms, you can't re-order your heroes to put White in front. And no matter how many heroes you hire, if none of them are white, every one of them runs away and no progress is made. At least you never have to light the room again once you light it once.

* TheScrappy: Dark Green Miis, whose abilities are practically useless in both Find Mii and Mii Force.

* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting your hero and your Play Coins.

* ThatOneLevel: Colored shields. They block all sword attacks except from heroes with a shirt of matching color. Magic goes around the shield, but at half damage. [[LuckBasedMission God help you if you don't have a friend to change their shirt into the color you need.]] A recent update has allowed you to hire past heroes in Find Mii/[=StreetPass=] Quest 1, however, alleviating that problem provided you've found at least one Mii with the needed shirt color.

* CrowningMomentOfAwesome: Despite the final battle of ''Warrior's Way'' being a LuckBasedMission, it's just so cool watching your entire army charge at the enemy with your Mii at the lead.
* CrowningMusicOfAwesome: Dark Lord/Emperor's battle theme from Streetpass Quest 2.

* ThatOneLevel: Colored shields. They block all sword attacks except from heroes with a shirt of matching color. Magic goes around the shield, but at half damage. [[LuckBasedMission God help you if you don't have a friend to change their shirt into the color you need.]]

* The roller coaster level in Mii Force makes the game into a literal rail shooter, only letting you move vertically and there are two forks in the path. Especially annoying in that you must take the hard routes in order to get some of the treasures.

* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting your hero and your Play Coins.

* DemonicSpiders: Any enemy that takes very litte damage from your attacks, or uses any type of magic (e.g Fortifying magic, Mirage magic, Level Down Gas, Nullifying Magic) in Streetpass Quest 2 / Find Mii 2.
** Mummies are especially infuriating since they can cost you a hero before you even do anything.
** Some of the reaper enemies will spew Cursed Gas, which prevents you from doing anything unless you use the Dispelling Draft potion.
* ThatOneLevel: Colored shields. They block all sword attacks except from heroes with shirts of matching color. Magic goes around the shield, but at minus 2 damage. [[LuckBasedMission God help you if you don't have a friend to boost you.]]
** Rooms covered in darkness can ONLY be passed by White magic, disallowing brute-forcing fire magic, and forces all other heroes in front of the White hero to flee. Unlike shield rooms, you can't re-order your heroes to put White in front.
** Even worse, you could reach the maximum number of heroes and NONE of them are white, resulting in all ten of them running away from the dark room. On the bright side, once the room is lit, you never have to light it again when you run out of heroes.
** Not to mention the Poison Rooms, in which the same applies, but needing the even rarer Yellow Miis.
** The Sealed Passage in Find Mii 2's Secret Quest. It contains a powerful Mummy enemy and the Reaper General. The Mummy will scare away your Miis and the Reaper spews curse gas and has a defense of 2. And although you might think it would be best to get rid of the Mummy first to save your Miis, if you do, then the Reaper will REVIVE it with full HP!
* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting a hero AND your Play Coins.

* DownloadableContent: Mii Force, Flower Town, Warrior's Way, and Monster Manor are all purchased at about five US dollars each. Slightly annoying as previous additions to the plaza games came free of charge.

* DLC: Mii Force, Flower Town, Warrior's Way, and Monster Manor are all purchased at about five US dollars each. Slightly annoying as previous additions to the plaza games came free of charge.

* ScrappyMechanic: Some of the potions you order may turn out to be defective, wasting a hero AND your Play Coins.
* WrongGenreSavvy: Any player who has been using potions or magic to defeat the enemy will be in shock when they find out that Dark Lord/Emperor is immune to potions and all forms of magic, forcing them to attack physically.
* SpoonyBard: Dark Green Miis, with a collection of Miis at level 7; they cannot be boosted beyond level 7, making their magic superfluous.
** Brown Miis also count.

* GenericDoomsdayVillain: In the Streetpass Quest2 / Find Mii 2, the first comment your Mii makes about Dark Lord is this.

** Even worse, you could reach the maximum number of heroes and NONE of them are white, resulting in all five of them running away from the dark room. On the bright side, once the room is lit, you never have to light it again when you run out of heroes.

** ItGotWorse: Rooms covered in darkness can ONLY be passed by White magic, disallowing brute-forcing fire magic, and forces all other heroes in front of the White hero to flee. Unlike shield rooms, you can't re-order your heroes to put White in front.