Super Mario Galaxy 2

Super Mario Galaxy 2 is a platforming video game developed by Nintendo for the Wii. It was first announced at E3 2009, and is the sequel to Super Mario Galaxy. It was released in North America on May 23, 2010. The game's levels are galaxies filled with minor planets and worlds. While its gameplay is based on that of its predecessor, the game was updated with gravity effects and new power-ups. It is the fourth original 3D platformer in the Mario series, after Super Mario 64, Super Mario Sunshine, and Super Mario Galaxy.

Boss Roars
Boss roar effects are not visible. See.

Wii Remote Lag When Collecting Starbits
The Wii Remote slows down when collecting starbits. To fix this, go to Dolphin Controllers Configuration Window and disable (untick) 'Enable Speaker Data' and this will mute the Wii Remote speaker, fixing the starbit slowdown problem. Seems like it might have something to do with the computer's Bluetooth dongle not granting enough bandwidth for the Wii Remote to receive the sounds and transmit controls at the same time.

Yoshi Not Eating Items In Direct3D 12 Mode
In D3D12 the red circle around edible items sometimes doesn't appear. Using a savestate and restarting the emulation fixes it temporarily.

Volume
Some sound effects/musical notes are louder than normal when using DSP HLE. Use DSP LLE for accurate audio emulation. Fixed by.

Music Cuts Out
Background music cuts out after a few minutes of play, as a consequence, it appears that the end credits of the game do not play, making it impossible to create a cleared save. Use the DSP LLE plug-in to correct this. Fixed by

Freeze After Grand Star Levels
Upon finishing a grand star level, the screen may go black, preventing you from saving or continuing. There are two known solutions to this problem. Fixed by
 * Use DSP-LLE (also solves other sound problems, recommended)
 * Disable sound (cannot use Save States, if used the game will freeze upon finishing the level.)

Language Region Mismatch
The Wii language setting must match an acceptable language for the region of this title being played: Japanese for SB4J; Korean for SB4K; English, Spanish or French for SB4E; English, French, German, Italian, or Spanish for SB4P; and Traditional Chinese for SB4W. Due to region checking built into the game, if an unacceptable language is set emulation hangs.