History YMMV / LegoHarryPotter

** The bonus level in ''Years 5-7'' can easily become this. You need to find 1000000 studs, by wreaking havoc in a small Lego town. Near the end of your goal, you probably have destroyed all of the obvious places, resulting in you running aimlessly around the level, searching for these last few studs. You can't cheat your way out of it by turning on Stud Multipliers.

* ScrappyMechanic: The mandrakes. As soon as you pick them up, your movement speed slows to a crawl and you become unable to jump, which is particularly aggravating when you have to transport the [[{{HellIsThatNoise}} screaming mandrake]] across a large area or can't find the pot you're supposed to put it in.

** The bonus level in ''Years 5-7'' can easily become this. You need to find 1000000 studs, by wreaking havoc in a small Lego town. Near the end of your goal, you probably have destroyed all of the obvious places, resulting in you running aimlessly around the level, searching for these last few studs. And you can't cheat your way out of it by turning on Stud Multipliers.

* ScrappyMechanic: The mandrakes. As soon as you pick them up, your movement speed slows to a crawl which is particularly aggravating when you have to transport the [[{{HellIsThatNoise}} screaming mandrake]] across a large area or can't find the pot you're supposed to put it in.

** The Forbidden Forest levels in ''Harry Potter Years 1-4''. Not particularly hard levels, but there are a ''lot'' of lego flowers and bushes lying around and if you want those LEGO studs for True Wizard (not to mention buying unlockables), you need to spend a good amount of time destroying ''all'' of them. Fortunately, if you are not above cheating, using the Multiplier red bricks makes this a lot easier.

* AnticlimaxBoss: Voldemort is ridiculously easy for the FinalBoss of ''Harry Potter: Years 1-4''. His entire boss fight consists of defeating a few [[{{Mooks}} Death Eaters]] and the occasional BeamOWar between Voldemort and Harry, where you need to button-mash your way to victory.

* PortingDisaster: The PC version of both Years 1-4 and 5-7 are prone to crashing and freezing at certain points in the game, making it impossible to progress further.
** The Wii version of 5-7 is almost just as bad, as it also freezes incredibly constantly. The worst part is a glitch with Aquamenti, where if you shoot it at any fire that you can't put out, the game automatically freezes. This makes certain levels ("A Not So Merry Christmas", especially) near impossible to complete without being very careful. As the Wii couldn't receive game updates like the other consoles, a later pressing of the game fixed this issue.
** The Vita version of Years 5-7 can have the framerate drop to abysmal levels; why this happens is unknown, since the original PSP version runs just fine.

* AdaptationDisplacement: The games are based more on the movies than the original books; though since these are the Cliffs Notes versions of the plots anyway, the difference is rarely noticeable. However, some characters and scenes from the books that did not make it into the movies, such as Harry using red sparks during the Forbidden Forest level of Year 1 and Professor Binns and Hestia Jones being playable characters, are featured.

* GameBreakingBug: Tom Riddle's Diary level, if you return to Hogwarts without finishing it, you can never complete it. The game skips to the next level so you can continue playing, but you can't even go back to replay it and miss out on completion.

* AdaptationDisplacement: The games are based more on the movies than the original books; though since these are the Cliffs Notes versions of the plots anyway, the difference is rarely noticeable.

** The Vita version of Years 5-7 can have the framerate drop to abysmal levels.

** The Wii version of 5-7 is almost just as bad, as it also freezes incredibly constantly. The worst part is a glitch with Aquamenti, where if you shoot it at any fire that you can't put out, the game automatically freezes. This makes certain levels ("A Not So Merry Christmas", especially) near impossible to complete without being very careful.

* BossInMookClothing: A couple levels have red snapping books that cross this with InvincibleMinorMinion. Impossible to destroy or to stun in any way, upon getting too close to one it will chase you down and kill you completely, ''even when the Invincible cheat is on'' (though at least that prevents you from losing studs). The only way to avoid them is invisibility.

* MostAnnoyingSound:
** Every student you pass greets you with the same high-pitched [[SpeakingSimlish "Huh Nuh"]].
** Nothing's worse than the Mandrakes. As soon as you go near them or pick them up, they start screaming and don't stop until you put them in the pot -- which is often hidden behind some other scenery you need to destroy first, meaning that you don't find it until later on in the scene. You can make them a bit more bearable by buying the Singing Mandrakes bonus.
** The Playstation 4 port plays the Student in Peril screams through the controller's speaker, with the audio getting louder as you approach the location. The problem is that you will hear screaming from ''anywhere'' within the entire area, and with many students imperiled in ways you won't have access to without later-year spells, you're just stuck listening to it until you turn the controller audio off.

** Every student you pass greets you with the same high-pitched [[SpeakingSimlish "Huh Nuh"]]. It's even worse in Years 5-7.

** The PS4 port plays the Student in Peril screams through the controller's speaker, with the audio getting louder as you approach the location. The problem is that you will hear screaming from ''anywhere'' within the entire area, and with many students imperiled in ways you won't have access to without later-year spells, you're just stuck listening to it until you turn the controller audio off.

* PortingDisaster: The PC version of ''Harry Potter Years 1-4'' is prone to crashing and freezing at certain points in the game, making it impossible to progress further.

** Never EVER try playing both or even just one of the games in one sitting. Each year is almost as long as the movie it's based on.

** Every student you pass greets you with the same high-pitched [[SpeakingSimlish "Huh Nuh"]].

* AnticlimaxBoss: Voldemort is ridiculously easy for the FinalBoss of ''Harry Potter: Years 1-4''.

** Nothing's worse than the Mandrakes. As soon as you go near them or pick them up, they start screaming and don't stop until you put them in the pot -- which is often hidden behind some other scenery you need to destroy first, meaning that you don't find it until later on in the scene.
* ThatOneLevel: The Forbidden Forest levels in ''Harry Potter Years 1-4''. Not particularly hard levels, but there are a ''lot'' of lego flowers and bushes lying around and if you want those LEGO studs for True Wizard (not to mention buying unlockables), you need to spend a good amount of time destroying ''all'' of them.