|Super Mario Sunshine 2: Return to Delfino|
|Single player, cooperative multiplayer|
|Series||Super Mario Sunshine|
|Predecessor||Super Mario Sunshine|
|Media Included||Comet Disc|
It's summer in the Mushroom Kingdom, and the inhabitants of Toad Town decide to take a vacation to Isle Delfino once again. When they get there, they find a pile of goop there that makes them very surprised. Delfino police say that a form looking very similar to Mario has returned, but it has been discovered that Bowser and his son are imprisoned deep in the bowels of Corona Mountain after the last adventure. Mario and crew decide to head there to investigate.
Bowser Jr. gets mad that someone else is using his alter ego and demands that he and his father be released so they can catch the criminal. In return, they will help Mario on his quest. Reluctantly, Delfino police decide to set them free. But when they head back to the plaza, they find that all the Shine Sprites have been stolen and strewn across the island. Bowser volunteers to help Mario find some of them, and then the quest begins.
Throughout the journey, Mario discovers that his old rival, Il Piantissimo, is nowhere to be seen on the island. This gets him suspicious and they conclude that he is Shadow Mario. Piantissimo confronts them on Delfino Plaza, resulting in an epic showdown. Piantissimo is defeated and the magic paintbrush is taken from him, but unfortunately, Bowser and Bowser Jr. doublecross Mario and take the paintbrush as well as Peach and then go take refuge in the middle of Corona Mountain.
Overall, the gameplay is very similar to that of its predecessor. Mario's main tool in the game, FLUDD, returns, with a few enhancements. His nozzle system has been rebooted. As in Super Mario Sunshine, the squirt nozzle is default and known in-game as the "main nozzle". In addition, there are several "back-up nozzles", which can be switched to at any point in the game once they have been unlocked. Nozzle boxes still appear, but if the nozzle has not been permanently unlocked, it cannot be switched to after completing the level. Nozzles can be selected via a button, in which a small pop-up for selecting the back-up nozzle appears. The only back-up nozzle open at the beginning is the hover nozzle, but the turbo, rocket, wing, submarine, and hurricane nozzles are unlockable later on in the game.
- Hover: It allows Mario to hover above the ground for a short period of time. It is very useful in some levels where Mario needs to scale heights.
- Rocket: It allows Mario to quickly boost up off the ground to very high heights, but it depletes his water levels very quickly.
- Turbo: Allows Mario to move at a very fast distance both above and under water, but he loses water even quicker than with the rocket nozzle.
- Wing: Mario can fly higher and longer than with the hover nozzle without a larger loss of water as this mainly serves as an upgrade.
- Submarine: Mario's underwater speed is greatly improved and is comparable to walking on land. His control is also easier.
- Hurricane: Mario can spray great quantities of water in a wide radius around him. It is useful in Shadow Mario chases and goop clean-ups.
There will be a total of fifteen courses, consisting of seven courses from the first game and eight new ones. Each will have a total of ten episodes, two secret levels, and one more for reaching 100 coins. This will make for a total of thirteen shines in each course, meaning there will be 195 shines from levels. In addition, the blue coins return, however only ten are found in each course. This will only add fifteen extra shines when the coins are spent. Twenty-eight more shines can be found strewn about Delfino Plaza, and three shines at the Delfino Airstrip. The remaining shine is collected by an extremely difficult final level.
Level 1: Bianco Hills
This level is unlocked by collecting one Shine Sprite.
Level 2: ???
This level is unlocked by collecting three Shine Sprites.
Level 3: Ricco Harbor
This level is unlocked by collecting six Shine Sprites.
Level 4: ???
This level is unlocked by collecting twelve Shine Sprites and by having completed the third episode of Ricco Harbor.
Level 5: ???
This level is unlocked by collecting twenty Shine Sprites.
Level 6: Gelato Beach
This level is unlocked by collecting twenty-eight Shine Sprites and by having completed the Shadow Mario chase.
Level 7: ???
This level is unlocked by collecting forty Shine Sprites and by having completed the fourth episode of Gelato Beach.
Level 8: Pinna Park
This level is unlocked by collecting fifty-five Shine Sprites.
Level 9: Sirena Beach
This level is unlocked by collecting seventy Shine Sprites and by having completed the fifth episode of Pinna Park.
Level 10: ???
This level is unlocked by collecting eighty-five Shine Sprites and by having completed the next Shadow Mario chase.
Level 11: Noki Bay
This level is unlocked by collecting one hundred and two Shine Sprites.
Level 12: ???
This level is unlocked by collecting one hundred and twenty-two Shine Sprites and by having completed the third episode of Noki Bay.
Level 13: Sherbet Slopes
This level is unlocked by collecting one hundred and forty Shine Sprites and by having completed the next Shadow Mario chase.
Level 14: Pianta Village
This level is unlocked by collecting one hundred and sixty Shine Sprites.
Level 15: Corona Mountain
This level is unlocked by collecting one hundred and eighty Shine Sprites and all Shadow Mario chases within levels.