* AntiClimaxBoss: In all non-Japanese versions of the game, the Black Jewel only has one phase, and this phase can easily be exploited by outrunning the fire laser attack; unless it traps you in the fire, it won't use any of its other attacks, which results in a very bland and repetitive final battle.
* SugarWiki/AwesomeMusic: The game overall has a fantastic soundtrack. Some highlights include the following.
** [[https://www.youtube.com/watch?v=mxA33Jw61Kg Greenhorn Forest]]. To the point that some consider it Wario's unofficial theme song.
*** The ''VideoGame/DanceDanceRevolution: Mario Mix'' [[https://www.youtube.com/watch?v=RkIScb5BWyA version]].
** [[https://www.youtube.com/watch?v=gRDg17a5fQg Greenhorn Ruins]].
*** The ''[[VideoGame/WarioLand Wario Land: Shake It!]]'' [[https://www.youtube.com/watch?v=f7JWJiz3Yuo version]].
** [[https://www.youtube.com/watch?v=V5zsFW6NgUE Brawl Doll]].
** [[https://www.youtube.com/watch?v=fognmUVWLHY Clown-a-Round]].
** [[https://www.youtube.com/watch?v=Xn7_GSoc-kQ Red-Brief J]].
** [[https://www.youtube.com/watch?v=KmIhBWBNkSs Pecan Sands]].
** [[https://www.youtube.com/watch?v=msHGPvH2kJA Captain Skull]].
* BestBossEver: The very first world boss, Dinomighty. A giant female dinosaur-alligator thing... that you can toss around and piledrive like any other enemy.
* CultClassic: It's a very little-known game by the standards of the extended ''Mario'' franchise, but Wario fans often consider it a highlight of his branch of the franchise thanks to Treasure's signature brand of weirdness and especially Wario's voice clips, which many argue to feature Creator/CharlesMartinet's best performance for any ''Mario'' character.
* DemonicSpiders: Magicians. Though they only appear in one stage (Mirror Mansion), that's more than enough for them to be trouble, because they're the one enemy in the game you're better off ''not'' fighting. Stunning them and performing a finishing move frees them from their bonds instead of killing them outright, so that you're forced to battle them when they're airborne and repeat the whole process over again. Thankfully, they're easy to avoid...until the boss fight with the Mean Emcee, where if you choose the wrong cup during the shell game, you'll be ''forced'' to fight them (alongside other enemies such as Ninja Crows) just to give Wario breathing space in the arena.
* {{Fanon}}: As a way to explain why Wario went from living in a castle to a simple house later on in the ''VideoGame/WarioWare'' series, as well as ''VideoGame/WarioMasterOfDisguise'' and ''VideoGame/WarioLandShakeIt'', some fans consider [[https://youtu.be/nkqM6Eny0J4?t=110 the worst ending]] (in which Wario gets a tent instead of his castle) to be the [[DownerEnding true ending]] of the game.
* FriendlyFandoms: While both games are rather obscure, Wario fans who know of Treasure's earlier game ''VideoGame/StretchPanic'' give it a lot of credit, as ''Wario World'' maintains much of its surreal and bizarre art style and parts of its gameplay structure.
* GameBreaker: The fact that if you die, you can continue ''right'' where you left off (including right in the middle of a boss fight) as long as you pay a piddly sum of coins.
* ItsShortSoItSucks: This game has a reputation for being over rather quickly, with its whopping ''eight'' levels (though they are fairly long, around twenty to thirty minutes each), going well with ''VideoGame/LuigisMansion1'' on the "list of Gamecube games critics took points off of for being short."
* MemeticMutation:
** The pause screen music, especially after {{Music/Siivagunner}} made a ''very long'' remix out of it.
** [[https://www.youtube.com/watch?v=mbeC2w-uIEU WARIO LAUGHING]], courtesy of [=MetalKingBoo=].
* SoBadItsGood: The [[https://www.youtube.com/watch?v=hAMNO2jOaz0 pause screen "music"]].
-->"NAAAAAAAH NYAH NYAH NYAAAAAAAH NYAH! NAAAAAAAH NYAH NYAH NYAAAAAAAH NYAH!"[[note]]After 50 minutes, Wario stops chanting and says [[EasterEgg "Sorry!"]][[/note]]
* ThatOneBoss:
** Captain Skull is a pain to fight after you knock off his first three [[CallAHitPointASmeerp "Skulls."]] If for no other reason than he is immune to punches after you do.
** The Mean Emcee. He's a CowardlyBoss with only two simple attacks, but the cups he takes refuge under will spin faster and faster the more health he loses, and choosing the wrong cup will unleash dangerous enemies (particularly Ninja Crows and Magicians) who will overwhelm Wario unless you deal with them quickly. If you're clumsy enough to pick the wrong cup more than once, the arena will get crowded fast, and the Mean Emcee's not such a pushover in a group.
* ThatOneLevel: Pecan Sands is long, filled with GoddamnedBats and DemonicSpiders, has treasure challenge areas that either have cryptic puzzles or tough platforming, and the boss? ''[[ThatOneBoss Ironsider.]]''
* ThatOnePuzzle: A couple of the underground puzzle rooms from [[ShiftingSandLand Pecan Sands]], which involve punching arrow blocks in certain directions in a certain order to get to the diamond. They are very difficult to solve without a guide or prior knowledge.
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