- Anti-Climax Boss: Some gamers felt Dark Nebula was a rather disappointing final boss in both story and gameplay. It's easier than almost every boss before it, having extremely predictable and easily avoidable attacks and a low amount of HP. Even if you somehow manage to lose the Triple Star ability before you reach it, beating with no ability at all is a simple task.
- Ensemble Dark Horse:
- While the game is a bit of a contention point for most Kirby fans, many admit to really liking Spinni, thanks to being a Badass Adorable ninja mouse.
- Daroach, the leader of the Squeak Squad, is also popular for his Gentleman Thief look. His popularity would lead to the Squeak Squad returning in Kirby Mass Attack as allies and eventually being added as a Dream Friend in Kirby Star Allies.
- Fridge Brilliance: One half of the main Squeak Squad has names starting with D (Daroach and Doc) and the other half has names starting with S (Spinni and Storo.) It's a game for the DS.
- Game-Breaker: Tornado is overpowered to the point of literal insanity. You are effectively invincible while using it, you fly with easy controls while using it, it lasts forever, does absurd contact damage, and the kicker? The frame it ends, you can start another tornado. Quite possibly the most definitively broken power in the history of Kirby.
- Hilarious in Hindsight: There's an enemy called Uja that looks like a black Master Hand made out of a swarm of insects that can also turn into a sword. Then in Super Smash Bros. for Nintendo 3DS and Wii U, we get the Final Boss, Master Core...
- Idiot Plot: The Excuse Plot gets more nonsensical later on in the game. Once Kirby confuses the chest with his cake in it for the one Meta Knight is guarding, does Meta Knight sit Kirby down and explain things? No! He makes off with it, and Kirby starts chasing after him! Five minutes of rational conversation would've completely shut down the last section of the game.
- It's the Same, Now It Sucks!: One of the main criticisms of the game is that, in contrast to Kirby & The Amazing Mirror and Kirby Canvas Curse making strong changes to the series while keeping the fundamental gameplay mechanics intact, its basically a watered down rehash of Kirby: Nightmare in Dream Land, right down to recycling the games engine and many of that games assets.
- Memetic Loser: Dark Nebula, given its status as a disappointing and easy final boss, has been the punchline of many jokes among the fanbase, mainly those related with other villains. Not helped by the fact Nebula didn't receive a remix for Daroach's Guest Star in Star Allies, unlike all the other Dream Friends who use the final boss theme from their respective games, while Daroach gets simply a remix of Squeak Squad Attack.
- Never Live It Down: Fans know this as the game where Kirby goes on a Roaring Rampage of Revenge over a slice of cake.
- Sequelitis: Seen as one to Kirby & the Amazing Mirror and Kirby: Canvas Curse. While the gameplay is still solid and the new abilities are fun, the Idiot Plot, minimal innovation and lackluster Final Boss are the points that make most feel like this is one of the weaker Kirby games.
- Underused Game Mechanic: The mixing system can create unique abilities that can't be gotten by any other means. Too bad there's only five abilities that can be gotten this way, the items needed to make them are located in the last third of the game, and they're nothing more than elemental versions of Sword and Bomb, providing little extra combat advantage. It's basically a watered-down version of Kirby 64: The Crystal Shards' ability combination system.
- It comes to say that Kirby Star Allies expands on this mechanic a bit, giving particular abilities elements, so the abilities have more variety and effects than just simply Sword and Bomb.
- Scrappy Mechanic: Amazing Mirror and a majority of the games after this one grant certain abilities' attacks a rebound effect, which prevents Kirby from taking collision damage against bosses by pushing him away slightly. However, Squeak Squad lacks this feature, which makes several abilities, such as Fighter, fairly unwieldy or straight up unsafe to use against bosses.
- Meanwhile, one feature that was kept from Amazing Mirror is how Kirby loses his ability upon taking one hit.
- A minor example, but Mecha Kracko's cloudy, flammable flooring makes certain abilities too dangerous to use. Including Triple Star.
- The Speedrun mode unlocked after beating the game is this. Unlike the previous one seen in Nightmare in Dream Land, here you have to beat the whole game again at 100%, there are no checkpoints so you cannot turn off the game, and completing it can take more than 2 hours, in a normal Nintendo DS will be pure suffering.
- Viewer Gender Confusion: Spinni (the ninja mouse) is the most androgynous of the Squeaks, which led to rumors that he's a she in Japan.
YMMV / Kirby: Squeak Squad