New Super Flash Mario Bros. The Adventure Returns (also known as New Super Flash Mario Bros. The Water Adventure or New Super Flash Mario Bros. The Watery Adventure) is a re-edition game. It is a game where Mario and his friends are having a party at Princess Peach's Castle when Bowser and his koopa kids are kidnapping everyone in the world, Bowser has kidnapped Princess Peach again.

The Adventure Returns is a game of nine worlds, many levels where only Mario must go. All eight worlds' levels have many water region levels such as, World 1 has one, World 2 has one World 3 has nine, World 4 has two, World 5 has four, World 6 has two, World 7 has one, World 8 has two, and World 9 has two.

Story
Mario, Luigi, and the Toads are with Princess Peach in Princess Peach's Castle having dinner together. Bowser and the Koopalings suddenly arrive in the Airship.

Worlds of Mushroom World:
World 1: Princess Peach's Kingdom (False Bowser, Larry Koopa)

World 2: Sarasaland (King Boo, Morton Koopa Jr.)

World 3: Seaside Beach (Clawgrip, Wendy O. Koopa)

World 4: Giant Jungle (Petey Piranha, Iggy Koopa)

World 5: Crystalline Snowland (Baron Brrr, Roy Koopa)

World 6: Goomba Canyon (Goomboss, Bowser Jr., Lemmy Koopa)

World 7: Cloudy Heaven (Lakithunder, Ludwig Von Koopa)

World 8: Bowser's Kingdom (Bowser Jr., SMB1 Bowser, Bowser)

World 9: Rainbow Road (N/A)