Boulder Bowl Galaxy

Boulder Bowl Galaxy is the second accessible galaxy in World 2 alongside Hightail Falls.

Boulder Bowl Galaxy introduces the Rock Mushroom where you use it to face off against Rollodillo.

Normal Stars

The green stars here are typically done in the order 3, 2, 1. Click here for more info on green star routing.

In order for Mailtoad to give you the letter for Boulder Bowl Letter, Chompworks 1 must be completed along with Boulder Bowl 1.

Boulder Bowl 1 triggers a Starship Event which moves Mario to the Engine Room and spawns the Rock Mushroom

Boulder Bowl Letter triggers a Starship Event which moves Mario to the bottom of the Starship and spawns Gearmo.

Boulder Bowl Comet triggers Mailtoad to give you 50 starbit via a letter

List of Galaxies in Super Mario Galaxy 2
World 1	Sky Station Galaxy ~ Yoshi Star Galaxy ~ Spin-Dig Galaxy ~ Fluffy Bluff Galaxy ~ Flip-Swap Galaxy ~ Rightside Down Galaxy ~ Bowser Jr.'s Fiery Flotilla
World 2	Puzzle Plank Galaxy ~ Hightail Falls Galaxy ~ Boulder Bowl Galaxy ~ Cosmic Cove Galaxy ~ Wild Glide Galaxy ~ Honeybloom Galaxy ~ Bowser's Lava Lair
World 3	Tall Trunk Galaxy ~ Cloudy Court Galaxy ~ Haunty Halls Galaxy ~ Freezy Flake Galaxy ~ Rolling Masterpiece Galaxy ~ Beat Block Galaxy ~ Bowser Jr.'s Fearsome Fleet
World 4	Supermassive Galaxy ~ Flipsville Galaxy ~ Starshine Beach Galaxy ~ Chompworks Galaxy ~ Sweet Mystery Galaxy ~ Honeyhop Galaxy ~ Bowser's Gravity Gauntlet
World 5	Space Storm Galaxy ~ Slipsand Galaxy ~ Shiverburn Galaxy ~ Boo Moon Galaxy ~ Upside Dizzy Galaxy ~ Fleet Glide Galaxy ~ Bowser Jr.'s Boom Bunker
World 6	Melty Monster Galaxy ~ Clockwork Ruins Galaxy ~ Throwback Galaxy ~ Battle Belt Galaxy ~ Flash Black Galaxy ~ Slimy Spring Galaxy ~ Bowser's Galaxy Generator
World S	Mario Squared Galaxy ~ Rolling Coaster Galaxy ~ Twisty Trials Galaxy ~ Stone Cyclone Galaxy ~ Boss Blitz Galaxy ~ Flip-Out Galaxy ~ Grandmaster Galaxy