Well, when you start with a game that's experimental as heck, of course there's going to be some YMMV.

* SugarWiki/AwesomeMusic: The whole soundtrack applies, but especially the opening theme.
** And the credits! Pikachu sings to you! ''[[CutenessProximity Pikachu sings to you!!]]''
* FridgeBrilliance: After [[spoiler:Oak makes you say goodbye,]] the second-to-last comment in the credits is "Hey, Pikachu is going home." [[spoiler:[[{{CrowningMomentOfHeartwarming}} Guess who's there when you get home.]]]]
* HilariousInHindsight: Near the end of the game, you have to follow Pikachu while he goes out shopping. What's your stealthy cover? [[Franchise/MetalGear A cardboard box.]]
** Many generations later [[VideoGame/PokemonXAndY Pikachu wouldn't be the only one who can be interacted with playfully]].
* SlowPacedBeginning: With limited camera control and no ability to hold items, Pikachu's Discovery Days is easily the weakest part of the game - it opens up nicely after that.
* SweetDreamsFuel[=/=]TastesLikeDiabetes: The game as a whole. It all hinges on how much you can take a game whose entire premise is romping around with a kid Pikachu. Perhaps reaches the zenith during the credits: Pikachu's singing can either make a grown man blurt out a big "d'awwwww!" or suffer a heart attack.
* ThatOneLevel: The pinata. That is ALL.
** Ochre Woods on Daring Days can be ThatOneLevel as well.