Prism Island

Prism Island is the main setting of the game Paper Mario: Color Splash. The island is first found drained of half its colors. Mario, Princess Peach and Toad came here to solve a mystery about a colorless Toad, after noticing that the stamp on him is the same on the Prism Island map in Mario's House.

On the island is a Bowser Tape, implying that Bowser is responsible for the colors now gone. This was later confirmed on the September 13 episode of Nintendo Life, with it also revealing that Bowser had been covered by Black Paint and intended to share the dark gift of it (although Princess Peach in her message to Mario upon being kidnapped implied that Bowser was not himself).

Levels

 * Port Prisma
 * Blue district
 * Red district
 * Yellow district
 * Harbor district
 * Ruddy Road
 * Cherry Lake
 * Indigo Underground
 * Bloo Bay Beach
 * Daffodil Peak
 * The Crimson Tower
 * Sunglow Ridge
 * Château Chanterelle
 * Mondo Woods
 * Marmalade Valley
 * Kiwano Temple
 * The Golden Coliseum
 * Dark Bloo Inn
 * Plum Park
 * Sacred Forest
 * Cobalt Base
 * Fort Cobalt
 * Violet Passage
 * Vortex Island
 * Lighthouse Island
 * Fortune Island
 * Mustard Café
 * Toad Trainworks
 * Tangerino Grill
 * Sunset Express
 * Redpepper Volcano
 * Redpepper Crater
 * Green Energy Plant
 * Mossrock Theather
 * The Emerald Circus
 * Black Bowser's Castle
 * Roshambo Temples
 * Roshambo Temple #1
 * Roshambo Temple #2
 * Roshambo Temple #3
 * Roshambo Temple #4
 * Roshambo Temple #5
 * Roshambo Temple #6
 * Roshambo Temple #7
 * Roshambo Temple #8

Entertainment
Toads celebrate a day called "Oceanfest", where they participate at multiple games to win a key as the first prize, allowing the winner to enjoy the beach.