- Anticlimax Boss: 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.
- Author's Saving Throw: The Japanese version of the game added another phase to the Black Jewel fight that not only broke up the repition, but was just all around fun with the Black Jewel going all out with crazy attacks including firing treasure chests.
- Awesome Music: The game overall has a fantastic soundtrack. Some highlights include the following.
- Best Boss Ever: The very first world boss, Dinomighty. A giant female dinosaur-alligator thing... that you can toss around and piledrive like any other enemy.
- Fanon: Some fans consider the worst ending to be the canonical ending of the game instead of the neutral/good endings as a way to explain why Wario went from living in a castle to a simple house later on in the WarioWare series as well as Wario: Master of Disguise and Wario Land: Shake It!.
- Game-Breaker: 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.
- It's Short, So It Sucks!: 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 Luigi's Mansion on the "list of Gamecube games critics took points off of for being short."
- Memetic Mutation:
- So Bad, It's Good: The pause screen "music"."NAAAAAAAH NYAH NYAH NYAAAAAAAH NYAH! NAAAAAAAH NYAH NYAH NYAAAAAAAH NYAH!"note
- That One Boss: Captain Skull is a pain to fight after you knock off his first three "Skulls." If for no other reason than he is immune to punches after you do.
- That One Level: Pecan Sands is long, filled with Goddamned Bats and Demonic Spiders, has treasure challenge areas that either have cryptic puzzles or tough platforming, and the boss? Ironsider.
- That One Puzzle: A couple of the underground puzzle rooms from 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.
YMMV / Wario World