* AccidentalInnuendo:
** When you fight Digga-Leg, you must hit it between the legs with a drill. Erm...
** Rollodillo, who you defeat by ''[[DishingOutDirt turning rock-hard]]'' and ''ramming yourself into its behind.'' [[BestialityIsDepraved Erm...]]
** Megahammer, who you battle by sending bullet bills into two large spherical sections of its chest and into a hole on its backside. [[RuleOfThree Erm...]]
* AnticlimaxBoss: [[spoiler:Bowser's final form.]] You literally ''cannot lose''.
* AwardSnub: Lost many, many GOTY awards to ''VideoGame/MassEffect2''. Despite the same people giving those awards giving [=SMG2=] 10/10s, probably due to the first ''Galaxy'' racking up nearly unanimous [=GOTY=]s three years before, while the original ''Mass Effect'' was largely ignored in GOTY awards (also in 2007) despite being one of that year's best-rated games. Much like at the Oscars, critics simply decided it was Mass Effect's "turn".
* SugarWiki/AwesomeMusic: See AwesomeMusic.SuperMarioGalaxy.
* BadassDecay: Downplayed with Yoshi. He still helps Mario as a PowerUpMount. Eat enemies? You betcha. Flutter jump? Sure. Extra hit point and a heroic sacrifice for Mario? Umm...not this time; he kind of wimped out for that one.
* BreatherBoss:
** Glamdozer is ''ridiculously'' easy, as long as you stay on the other side of the planet, at least until she [[TurnsRed goes berserk]] and starts spitting balls of lava on the grates. Ironically, the developers seemed to think that Glamdozer was either hard or a PuzzleBoss (which she is, to an extent, but then again, ''all'' of the bosses are to some extent), given that she's the only boss that the Cosmic Guide can show you how to beat.
** Squizzard, too, since you can just stand on a chunk of solid ground and spam fireballs; his projectiles can't touch you, and you can just unload a ton of hits and then reset your fire flower while he does his "injured" animation.
** The Whomp King, who has rather easy to dodge attacks and an easy enough to hit weak point. While he is harder than he was in 64, they didn't make him THAT much harder. And they made him a boss in the final world of the main game, so he should be a cakewalk.
* BrokenBase:
** Throwback Galaxy. Is it a NostalgiaLevel capable of making players weep with joy once they hear the MusicalNod, or is it proof that Nintendo is running out of ideas and is too lazy to make a new, creative level?
** ''The game itself''. Is it a sequel that's even better [[Videogame/SuperMarioGalaxy than the original game]], or is it [[ItsTheSameSoItSucks exactly the same as the first]], but with different levels [[ItsEasySoItSucks and little difficulty]]?
* ContestedSequel: While generally well-liked, critics and fans are divided as to whether it's better than the original or not.
* DemonicSpiders: The Cosmic Clones are either this or GoddamnedBats. (See NightmareFuel and Goddamned Bats below.) Their main Demonic Spider qualities are invulnerability and great numbers.
* DisappointingLastLevel:
** The Green Stars. Upon unlocking them, the focus of the game shifts from finding exciting and interesting new areas to scouring old maps for the hidden Green Stars (which thankfully chime when you are close to them). Some require interesting acrobatic feats, but many of them are just in some pit or, most [[{{egregious}} egregiously]], ''right next to the gold star'', as if to taunt players who were looking carefully for it through the whole level. This is also the point where the game turns into a WideOpenSandbox as you explore and look for all of the stars. Plus, to keep their locations secret, all of them are named generically ("Green Star 1", etc).
** There are the cases where there are multiple green stars in the same level. You can only get one at a time, meaning that there are some levels that by design you'll be doing over and over.
* GameBreaker: Spinning and ground-pounding gives you a ''homing ground pound''. Fair enough, but then you learn that '''it works on Stars too!!''' [[spoiler: [[{{PlatformHell}} All those difficult suicide-jump]] [[{{NintendoHard}} Green star missions?]] [[{{WaynesWorld}} Denied!]]]]
* GoddamnedBats:
** The Cosmic Clones. They hound you ''endlessly''. They may also qualify as DemonicSpiders (see above). Or perhaps Demonic Bats or Goddamned Spiders.
** The Octoombas, a.k.a. the little blue alien dudes that spit rocks. They were virtually harmless in the first ''Galaxy'', but this game just ''had'' to make them so annoying. They're all over the place, and they live just to knock you off ledges and mess up Daredevil Comet runs. They're especially annoying during the last game against the Chimp. It veers so close to {{fake difficulty}}, the Chimp even [[LampshadeHanging lampshades]] it by saying that he'll need to find some more games so he can continue to enjoy your frustration. Just reading that line makes it all worth the while, though.
* GoddamnedBoss: Digga-Leg. You're supposed to use the Drill to burrow through the planet and nail him in the glass underside, but the problem is he's constantly moving around after the first hit, which wouldn't be an issue at all if the hitbox wasn't so ridiculously small. The only surefire way to ''not'' bounce off his legs instead of dealing damage is to position yourself and start drilling right before he flips over, which [[FlunkyBoss the Diggas he releases]] make a hassle.
* GoodBadBug: [[http://www.youtube.com/watch?v=Oh1uexrKEJI Infinite flutter jump for Yoshi.]] As in, [[spoiler:you can keep going ''higher'' unlike in ''Yoshi's Island''.]]
* ItsEasySoItSucks: Some people's knee-jerk reactions to the Cosmic Guide, as with ''VideoGame/NewSuperMarioBrosWii'''s Super Guide. See MercyMode on the main page for details.
* ItsTheSameNowItSucks: Probably the most common complaint leveled toward the game, due to it using the same game engine as the first ''Galaxy'' and incorporating several {{Nostalgia Level}}s. (In fact, several elements from the first ''Galaxy'' that don't show up here, like the Ice Flower, [[DummiedOut still exist in the game's code]].
* OlderThanTheyThink: Think this is the first game ever to have dark clones of yourself that mimic your actions and are lethal to the touch? Think again; by the time this game came out, ''[[{{VideoGame/Rayman1995}} Rayman]]'' already had it beat by ''fifteen years''.
* ParanoiaFuel: [[HailfirePeaks Shiverburn Galaxy]]. It may not seem like this at first, [[http://gonintendo.com/viewstory.php?id=126769 but just what are those things watching you?]]
* [[RecycledScript Recycled (Boss) Script]]:
** One secret star in the Puzzle Plank Galaxy involves you fighting Bugaboom in the exact same way you fought him in [=SMG1=], only with a PaletteSwap and with the Cloud Flower instead of the Bee Shroom. The star's title even [[LampshadeHanging lampshades this]] with its title, "Bugaboom's Back". Also, there's a boss rush mode later on in the game involving other [=SMG1=] bosses.
** The [[spoiler:[[SuperMario64 Whomp King]] in the Throwback Galaxy]] reuses most of his original quotes, as a MythologyGag.
* ReplacementScrappy: Lubba compared to Rosalina.
* TheScrappy: The Chimp.
* ScrappyMechanic:
** The spring power-up from the first game is back, and it's just as hard to control as it was before. However, it shows up in only one level, and the level can be completed easily enough without it.
** The {{Waggle}}-controlled Star Ball is back as well. The Manta Ray doesn't show up, but a new gimmick, [[NotQuiteFlight Fluzzard]], does, and handles almost as sloppily.
* StopHelpingMe: Every time you get a game over, and sometimes at other points in the game, Lubba will suggest that you take a break. This was probably meant to be an AntiFrustrationFeature, but it's more annoying than anything else.
* ThatOneBoss:
** Gobblegut is annoying enough in his regular form unless you can figure out how to hit his bellyache bulges in midair. Just wait till you have to face a ''fire'' version of him. You can't touch his body without taking damage, making it very hard to take out his bellyache bulges during the short window you have open to you, and whenever he dive-bombs the planet, he leaves lava pools.
** Fiery Dino Piranha. Dear GOD.
* ThatOneLevel:
** The Daredevil Run on [[spoiler:Grandmaster Galaxy]] can be [[PlatformHell hard]], since you have to complete several challenges with [[OneHitPointWonder only 1 hit point]] and ''no'' checkpoints. Heck, the Hammer Bros section ''alone'' is tough to do without dying.
** [[spoiler:Grandmaster Galaxy]] is something of a That One Level by itself. The Daredevil Run merely makes things ''worse''.
** Any level where Cosmic Clones appear. Special mention goes to "Cosmic Clones in the Chompworks", whose path to completion involves several spots where you have to retrace your route, thrusting you right back into the path of the pursuing clones.
** For those who had horrible memories of it in the first game (particularly the fast foe comet star), the Cyclone Stone returns, and it's much more painful than before. Let [[http://www.youtube.com/watch?v=dEMvIOxSNHU this video]] speak for itself.
** All of the Chimp's levels; it is extremely frustrating to die just 10 points away from the final total and have to do the whole challenge over again. The worst is by far Melty Monster Galaxy's Bowling Challenge: what would normally be the most enjoyable of the games is wrecked by the fact that you need to talk to him and pick up a Rock Mushroom every time you lose (and he has three lines of text, each of which takes about three seconds to display).
** The already hard [[spoiler:Luigi's Purple Coins]] is back, and they seem to have made it both easier ([[spoiler:actual solid ground, P2 can help out]]) ''and'' harder ([[spoiler:The timer is reduced from 3:00 to 2:00, there are only 100 purple coins and you have to grab them all, and there are Cosmic Clones chasing you.]])
* UglyCute:
** Peewee Piranha, up until it decides to chase you back.
** Rollodillo is a large blue armadillo with a face like a bulldog... and huge puppy dog eyes.
* TheWoobie: The Toads, when they're scared and shaking.