Super Mario Galaxy 2: Comet Medals, Prankster Comets and missing stars
Troubleshoot missing Super Mario Galaxy 2 stars with Comet Medal checks, secret routes, mail missions and Bronze Stars.
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.
Check the galaxy’s medal first
There is one Comet Medal in each galaxy, for 49 in total. A medal is separate from the mission’s Power Star and is normally found along a particular route. Finish the mission after collecting it. When checking a galaxy you have visited before, use the map’s medal indicator instead of relying on whether the collectible looks familiar.
Understand the comet’s challenge
Prankster Comets revisit stages with a new condition: a time limit, one health point, Purple Coins or another restriction. The galaxy’s medal is part of opening its comet mission, but progress elsewhere can also matter. Clear newly available stages and check back if a medal is collected and the comet has not appeared immediately.
Follow secret routes and new mail
Not every star is the next obvious mission selection. Hungry Lumas can create extra paths, and characters such as the Chimp send invitations through Mailtoad. Talk to the ship’s passengers and inspect incoming letters when your total stalls. In a familiar mission, look for a side route or optional character before heading directly to the usual goal.
Replace assisted Bronze Stars
The Cosmic Spirit can demonstrate a difficult mission, but completing it with Cosmic Guide gives a Bronze Star. That is useful for seeing how the route works, yet it does not replace a normal star for the final completion requirements. Replay the mission yourself once you understand the difficult section, then resume checking worlds systematically for remaining stars.
Sweep one world at a time and note whether each missing objective is a medal, normal mission, secret star or comet.
Picture details
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