History YMMV / StreetpassMiiPlaza

* AwesomeButImpractical: The Epic Banquet in Feed Mii is the only food that can reach a 7 star rating but requires ''one of each item to make''. The only way to feed it to your customers is to have 5 ingredients in the fridge and streetpass at least 10 people and hope you don't get many duplicates. You're barely ever going to need anything over 5 stars with a full team anyway.

* EarWorm:
** [[https://www.youtube.com/watch?v=6UrpJsj-FIA Poppy's Seeds]]

** If, for whatever reason, you have wireless communication on your 3DS turned off when you crank up the app, the game will pester you at every opportunity (such as when you travel to and from games or the plaza area itself) to turn your wireless communication on to be able to use Streetpass. It doesn't matter if you're someplace that forbids wireless-transmission devices, such as airplanes on some airlines[[note]]Some airlines have wifi and even cellular roaming onboard their aircraft, but others still disallow devices from running wireless transmissions out of fear of interference with aircraft systems, the most extreme policy being to forbid cellphones even with airplane mode (which disables all wireless transmission unless manually switched back on by the user) enabled.[[/note]].

** If, for whatever reason, you have wireless communication on your 3DS turned off when you crank up the app, the game will pester you at every opportunity (such as when you travel to and from games or the plaza area itself) to turn your wireless communication on to be able to use Streetpass. It doesn't matter if you're someplace that forbids wireless-transmission devices, such as airplanes on some airlines[[note]]Some airlines have wifi and even cellular roaming onboard their aircraft, but others still disallow wireless devices out of fear of interference with aircraft systems, the most extreme policy being to forbid cellphones even with airplane mode (which disables all wireless transmission unless manually switched back on by the user) enabled.[[/note]].

** If, for whatever reason, you have wireless communication on your 3DS turned off when you crank up the app, the game will pester you at every opportunity (such as when you travel to and from games or the plaza area itself) to turn your wireless communication on to be able to use Streetpass. It doesn't matter if you're someplace that forbids wireless-transmission devices, such as an airplane.

** If, for whatever reason, you have wireless communication on your 3DS turned off when you crank up the app, the game will pester you at every opportunity (such as when you travel to and from games or the plaza area itself) to turn your wireless communication on to be able to use Streetpass.

* HellIsThatNoise:
** "The Ominous Floors" from ''Monster Manor'' is considered to be [[NightmareFuel rather creepy]] by some players.
** The alarm blaring in the final battle of ''Battleground Z''. When you hear that, you '''have''' to stop it.

** The golden and bonus species in ''Ultimate Angler'': Each species, in order to even appear, requires you find a Mii whose last creature caught or attempted was that species, which means the odds of finding such a person are already microscopically low.[[note]]The alternative is to tag a person a number of times that's a multiple of 10, which generates an encounter with a randomly chosen species, unless they attempted one of these species immediately prior, which will override that selection.[[/note]] You also need the right bait for it, and they take the longest to reel in (more so than the Mystery Species or even the final species), meaning you will need at minimum 2 pieces of compatible bait, if not 3 or 4. There are also 12 of these species total. You could be [=StreetPassing=] thousands of people and never come close to catching all of them.

* LastLousyPoint: In ''Battleground Z'' any rare zombie that corresponds to a hobby that almost no one has can be this. Similar to getting Miis with a specific color for the ''Find Mii'' games, if you don't have a friend willing to change what their hobby is listed as, you're pretty much screwed. Fortunately, unlike the using the mii's specific color to get through a room in the ''Find Mii'' games, these are optional. Unfortunately, unlike in the ''Find Mii'' games, you can't choose to hire someone with the specific weapon you need, so it is entirely a LuckBasedMission even if you use play coins. On top of that, there are more than double the amount of hobbies than the number of different-colored shirts.

* AwesomeButImpractical: The Epic Banquet in Feed Mii is the only food that can reach a 7 star rating but requires ''one of each item to make''. The only way to feed it to your customers is to have 5 ingredients in the fridge and streetpass at least 10 people and hope you don't get many duplicates. You're barely ever going to need anything over 3 stars with a full team anyway.

*** You'll get a booster with at least ten points(more if there's a special mii in the race) in Slot Car Racers.

*** A simple 3 star item will solve just about any problem in Feed Mii.

** [=HomePassing=] (see the main page) and Play Coins. The latter has an exception on ''Puzzle Swap'', see ScrappyMechanic below.

** Sometimes customers will ask for a meal that you may not have ''any'' ingredients for, which is a waste. It gets even worse when fighting against the final boss, as they ''always'' ask for the Epic Lunch/Meal, which takes up a ''lot'' of ingredients. Luckily you always have the option to change it to something simpler.

*** Less gamebreaking in Ninja Launcher because you still need to line up the flags, but it's still possible to one shot most enemies in the game if you grab all ten.

* RescuedFromTheScrappyHeap: Brown Shirts weren't that useful in ''Find Mii'', as they could only summon another hero, and it was always a random color. But in ''Mii Force'', they have a drill weapon, handy for defense.

** In ''Battleground Z'', people who somehow have no hobbies whatsoever are given a random weapon. The random weapon isn't the bad part. The bad part is that the weapons they give out are damaged and don't last long at all.
** In ''Mii Trek'', any Mii with only 500 steps. They barely give you steps to use and are gone in just a few seconds.

** Having 10 Analysts in Market Crashers has them almost flat out tell you the exact highs and lows of the stocks for the day.

* AnnoyingVideoGameHelper: 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. This is also unpleasantly averted by the fact that he stops wondering if any of your plant pals will come by, forcing you to memorize or write down the Miis that you've [=StreetPassed=] with more than once.

** In ''Battleground Z'', people who somehow have [[TheyJustDidntCare no hobbies whatsoever]] are given a random weapon. The random weapon isn't the bad part. The bad part is that the weapons they give out are damaged and don't last long at all.

** In ''Battleground Z'', the Wii Remote will be the weapon you use the most. Along with being the most prominent since many people you encounter choose [[EnsembleDarkhorse playing video games as their favorite hobby]], it also has great range and great power and a BoringButPractical special move [[ShoutOut not unlike]] [[Franchise/TheLegendOfZelda Link's]] [[SignatureAttack iconic Spin Attack]].

* ThatOneAchievement: Every game bar ''Puzzle Swap'' has at least one.

** In ''Battleground Z'', people who somehow have [[EpicFail no hobbies whatsoever]] are given a random weapon. The random weapon isn't the bad part. The bad part is that the weapons they give out are damaged and don't last long at all.

*** Beating the Voltoad boss without letting him eat any of the batteries that drop around the edge of the arena. Early on in the fight, only two or three usually drop at a time, but when he's low on health, there can be as many as '''''eight'''''. And once he spots a battery and starts hopping toward it, he moves faster than you do.[[note]]Tip: use the Piggy Bank weapon.[[/note]]

** Light Blue Miis in ''Mii Force'': Even when low levelled their attacks are extremely effective against swarms of enemies and defending against attacks.
** Spying in ''Warrior's Way'', especially once you're able to do it at least twice per session. Defeating an enemy army twice your size is actually pretty easy when you know in advance what they're next move is going to be.

*** 'Absorb Lv3' skill, which lets you recover 50% of the damage you've dealt to an enemy, combined with a high quality weapon with a fast and strong ChargedAttack, this effectively eliminates the need of healing potions for the rest of the game. Even the final boss cannot outdamage the raw healing from this with the right setup.
*** Using ''Burn'' skill at level 3 means that you have a 50% chance of burning all enemies in your way, and this is increased even further if you equip multiple skill badges to raise the percentage even higher. All of the bosses including the final boss fall apart using this method.
*** The ''Lucky Seven'' skill is basically a CriticalHit effect that deals ''seven times the power of the same charged shot used'' with fairly good proc rate of 20%. And as mentioned, a good weapon with this skill can trivialize anything the game throws at you, even the final boss.

* 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. This is also unpleasantly averted by the fact that he stops wondering if any of your plant pals will come by, forcing you to memorize or write down the Miis that you've [=StreetPassed=] with more than once.

** In ''Battleground Z'', the Wii Remote will be the weapon you use the most. Along with being the most prominent since many people you encounter choose [[EnsembleDarkhorse playing video games as their favorite hobby]], it also has great range and great power and a BoringButPractical special move [[ShoutOut not unlike]] [[Franchise/TheLegendOfZelda Link's]] [[VideoGame/SuperSmashBros recovery move in Smash Bros.]]

** Also Iris Archwell.

* HellIsThatNoise: "The Ominous Floors" from ''Monster Manor'' is considered to be [[NightmareFuel rather creepy]] by some players.

* SugarWiki/HeartwarmingMoments: At the end of ''Monster Manor'', [[spoiler: you give Iris the journal of the scientist who made a deal with the ghosts of the game to save his daughter's life.]]

** Armored enemies in ''Find Mii'' render level 1 Miis without offensive spells useless. Unless you [=StreetPass=] the same people over and over (somewhat more likely at schools and college campuses and if you have people in your place of residence that also have [=3DSes=]), your squad of Miis for each run will usually consist of level 1 Miis.

** Armored enemies in ''Find Mii'' render level 1 Miis without offensive spells useless. Unless you [=StreetPass=] the same people over and over, chances are your squad of Miis for each run will usually consist of level 1 Miis.