Are Grand Stars Required To Finish Super Mario Galaxy?

Super Mario Galaxy is one of those games that feels like a magical playground, and the Grand Stars are like golden tickets to unlocking new adventures. You don’t technically need all of them to finish the main story—just enough to reach Bowser in the final showdown. The game lets you collect a subset of Grand Stars to progress, which is great if you’re not a completionist. But here’s the thing: skipping too many means missing out on some of the best levels and hidden galaxies. I always end up chasing extras because the game’s design makes exploration so rewarding. The way each Grand Star gates new worlds creates this natural rhythm of challenge and discovery.

That said, if you’re just aiming for the credits roll, you can totally beat the game without sweating the optional stuff. It’s a nice balance—casual players get a satisfying arc, while collectors can dive deep into every nook. Personally, I love the extra challenge of tracking down every last one, especially since some require clever platforming or solving puzzles. The Comet Observatory feels emptier without all those Grand Stars lighting up the dome, y’know?

Short answer? No. Long answer? Also no, but with more sparkle. The game’s structured so you can finish it by collecting about two-thirds of the Grand Stars, which is merciful for anyone who struggles with trickier levels (looking at you, 'Dreadnought Galaxy'). But here’s the catch: the post-game unlocks, including Luigi mode and the true ending, demand more. It’s this clever carrot-on-a-stick design—you beat Bowser and think you’re done, only to realize there’s a whole extra layer if you keep going. I adore how Nintendo makes completion optional but irresistible. Those last few stars had me replaying levels with fresh tricks, and the payoff was worth every frustrated controller toss.