Super Mario Galaxy 2: world map progression and boss battle tips
Follow the seven-world structure of Super Mario Galaxy 2 and learn the basic openings for Digga-Leg, Megahammer and Bowser.
Original 2010 Wii release. Star totals and Banktoad instructions here follow Wii; the 2025 Nintendo Switch edition changes the final Star Bit requirement to Star Bits on hand.
Travel from Starship Mario
Starship Mario acts as the home base between missions. Stand at its steering area to use the world map, then select a connected galaxy. The adventure passes through Worlds 1 to 6 before the optional World S. Gates display the star total needed, so revisit an open branch when the next route refuses to let you through.
Use a boss’s own mechanic
Boss arenas usually continue the skill taught by their galaxy. Digga-Leg asks you to drill through its small planet when its vulnerable underside is exposed. Do not chase every movement with a full-speed attack. Watch one cycle, locate the safe position and act during the opening; later comet conditions give fewer chances to recover from guessing.
Return Megahammer’s projectiles
During the Megahammer fight, Yoshi can catch Bullet Bills and spit them back at the machine’s blue targets. Aim deliberately and use the arena’s movement options to avoid the incoming barrage. When the battle changes phase, identify the new exposed target rather than continuing to fire at armour that you have already destroyed.
Treat the ending as a checkpoint
Bowser’s battles use meteorites that Mario can ground-pound back toward him at the right moment. The final victory rescues Peach and opens the next part of the star hunt, including wider access to Luigi. Continue clearing the remaining ordinary missions before attempting to trigger Green Stars; the first credits sequence does not mean every galaxy has been exhausted.
If a boss feels confusing, identify the stage-specific tool or projectile before trying ordinary spin attacks.
Picture details
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