The following is the list of costumes that are available in Project SEKAI COLORFUL STAGE!.
List of costumes
| Thumbnail | Costume name | Gender | Release date | Acquisition method(s) | Accessory | Unique accessory | Unique hair |
|---|---|---|---|---|---|---|---|
 | School Rock | Ladies | 2020-09-30 |
| No | No | No |
 | School Rock | Men | 2020-09-30 |
| No | No | No |
 | Melody Clover | Ladies | 2020-09-30 |
| No | No | No |
 | Melody Clover | Men | 2020-09-30 |
| No | No | No |
 | Street Hoodie | Ladies | 2020-09-30 |
| No | No | No |
 | Street Hoodie | Men | 2020-09-30 |
| No | No | No |
 | Wonder Magic | Ladies | 2020-09-30 |
| No | No | No |
 | Wonder Magic | Men | 2020-09-30 |
| No | No | No |
 | Midnight Fiction | Ladies | 2020-09-30 |
| No | No | No |
 | Midnight Fiction | Men | 2020-09-30 |
| No | No | No |
 | Subculture Boy Style | Ladies | 2020-09-30 |
| Yes | No | No |
 | Subculture Boy Style | Men | 2020-09-30 |
| Yes | No | No |
 | Rocking Blue Check | Ladies | 2020-09-30 |
| No | No | No |
 | Sparkling Frills | Ladies | 2020-09-30 |
| Yes | No | No |
 | Mischievous Street | Men | 2020-09-30 |
| No | No | No |
 | Handsome Lady | Ladies | 2020-09-30 |
| Yes | No | No |
 | Wonderful Coat | Men | 2020-09-30 |
| No | No | No |
 | Sekai's Tea Party Dress | Ladies | 2020-09-30 |
| Yes | No | No |
 | Sekai's Tea Party Suit | Men | 2020-09-30 |
| No | No | No |
 | Flower Fairy | Ladies | 2020-09-30 |
| Yes | No | No |
 | Rose Cage | Ladies | 2020-09-30 |
| Yes | No | No |
 | Crown Knight | Ladies | 2020-09-30 |
| Yes | No | No |
 | Starry Night Pongee | Ladies | 2020-09-30 |
| Yes | No | No |
 | Starry Night Pongee | Men | 2020-09-30 |
| No | No | No |
 | 39PUNK | Ladies | 2020-09-30 |
| Yes | No | No |
 | 39PUNK | Men | 2020-09-30 |
| Yes | No | No |
 | Happy Chick One-piece Dress | Ladies | 2020-09-30 |
| Yes | No | No |
 | Starlight | Men | 2020-09-30 |
| No | No | No |
 | Twinkle Sound | Ladies | 2020-09-30 |
| No | Yes | No |
 | Hopping Frills | Ladies | 2020-09-30 |
| Yes | Yes | No |
 | Active Street | Ladies | 2020-09-30 |
| No | Yes | No |
 | Little Star | Men | 2020-09-30 |
| No | No | No |
 | Chamber Melody | Ladies | 2020-09-30 |
| Yes | No | No |
 | Stella Rock | Ladies | 2020-10-09 |
| Yes | Yes | No |
 | Stella Clover | Ladies | 2020-10-09 |
| Yes | Yes | No |
 | Masquerade Doll | Ladies | 2020-10-20 |
| Yes | Yes | No |
 | Mask of Tear | Ladies | 2020-10-20 |
| Yes | Yes | No |
 | Master Tail Coat | Men | 2020-10-31 |
| No | Yes | No |
 | The Formal Star | Men | 2020-10-31 |
| No | No | No |
 | Fluffy Snow Coat | Ladies | 2020-11-01 |
| Yes | No | No |
 | Fluffy Snow Coat | Men | 2020-11-01 |
| Yes | No | No |
 | Smiley Cheer | Ladies | 2020-11-09 |
| No | Yes | No |
 | Enjoy Flag | Ladies | 2020-11-09 |
| No | Yes | No |
 | Rainbow Heart | Ladies | 2020-11-19 |
| Yes | Yes | No |
 | Jumping Heart | Ladies | 2020-11-19 |
| Yes | Yes | No |
 | Sunrise City | Ladies | 2020-11-30 |
| No | No | No |
 | Clear Light City | Ladies | 2020-11-30 |
| No | Yes | No |
 | Classical Maid | Ladies | 2020-12-01 |
| Yes | No | No |
 | Classical Butler | Men | 2020-12-01 |
| No | No | No |
 | Cute ☆ Fes T-Shirt | Ladies | 2020-12-10 |
| No | Yes | No |
 | Festival Blazer | Men | 2020-12-10 |
| No | No | No |
 | Wonder ☆ Santa Girl | Ladies | 2020-12-20 |
| Yes | Yes | No |
 | Present For You! | Ladies | 2020-12-20 |
| Yes | Yes | No |
 | Christmas Style ☆ 2020 (ladies) | Ladies | 2020-12-24 |
| Yes | No | No |
 | Christmas Style ☆ 2020 (men) | Men | 2020-12-24 |
| Yes | No | No |
 | Happy New Year's Dress | Ladies | 2021-01-01 |
| Yes | No | No |
 | Happy New Year's Attire | Men | 2021-01-01 |
| Yes | No | No |
 | Moo-Moo ☆ New Year | Ladies | 2021-01-01 |
| Yes | No | No |
 | Moo-Moo ☆ New Year | Men | 2021-01-01 |
| Yes | No | No |
 | Fanatic New Year | Ladies | 2020-12-31 |
| No | Yes | No |
 | Kotobuki Hoodie | Men | 2020-12-31 |
| No | No | No |
 | Stained Glass Tenderheart | Ladies | 2021-01-10 |
| Yes | Yes | No |
 | Stained Glass Braveheart | Ladies | 2021-01-10 |
| No | Yes | No |
 | Truth Flower | Ladies | 2021-01-21 |
| Yes | Yes | No |
 | Dear Flower | Ladies | 2021-01-21 |
| Yes | Yes | No |
 | Classic Coordination | Men | 2021-01-31 |
| No | No | No |
 | Classical Jacket | Men | 2021-01-31 |
| No | No | No |
 | Berry Choco Pancake | Ladies | 2021-02-01 |
| Yes | No | No |
 | Pastel Ice Cream | Men | 2021-02-01 |
| Yes | No | No |
 | Rockin' Beast | Ladies | 2021-02-09 |
| No | Yes | No |
 | Rockin' Fluffy | Ladies | 2021-02-09 |
| No | Yes | No |
 | Narcissus Painter Dress | Ladies | 2021-02-18 |
| Yes | Yes | No |
 | Unsure Apron Dress | Ladies | 2021-02-18 |
| Yes | Yes | No |
 | Candy Wheel | Ladies | 2021-02-28 |
| Yes | Yes | Yes |
 | Coffee Cup Balloon | Ladies | 2021-02-28 |
| Yes | Yes | Yes |
 | Optimize | Ladies | 2021-03-01 |
| Yes | No | No |
 | The Melody Chaser. | Men | 2021-03-01 |
| Yes | No | No |
 | Yumekawa Pegasus | Ladies | 2021-03-10 |
| Yes | Yes | No |
 | Traditional Pegasus | Men | 2021-03-10 |
| Yes | Yes | No |
 | Angel of Hope | Ladies | 2021-03-22 |
| Yes | Yes | No |
 | Angel of Believe | Ladies | 2021-03-22 |
| Yes | Yes | No |
 | Hummingbird | Ladies | 2021-04-01 |
| Yes | No | No |
 | Hummingbird | Men | 2021-04-01 |
| Yes | No | No |
 | Requiem Night | Ladies | 2021-03-30 |
| Yes | Yes | Yes |
 | Library Dress | Ladies | 2021-03-30 |
| Yes | Yes | Yes |
 | Phantom Bad | Ladies | 2021-04-01 |
| Yes | No | No |
 | Phantom thief | Men | 2021-04-01 |
| Yes | No | No |
 | Cherry Pink One-Piece Dress | Ladies | 2021-04-01 |
| Yes | Yes | No |
 | Cherry Pink Crossing | Ladies | 2021-04-01 |
| Yes | Yes | No |
 | Hide Crinoline | Ladies | 2021-04-11 |
| Yes | Yes | No |
 | Nestle Crinoline | Ladies | 2021-04-11 |
| Yes | Yes | No |
 | Dream Chaser | Ladies | 2021-04-21 |
| Yes | Yes | No |
 | Dream Maker | Ladies | 2021-04-21 |
| Yes | Yes | No |
 | Vivid Soul | Men | 2021-04-30 |
| No | Yes | Yes |
 | Vivid Crew | Ladies | 2021-04-30 |
| Yes | Yes | Yes |
 | Black Cat Starlight | Ladies | 2021-05-01 |
| Yes | No | No |
 | Wizard of the Sekai | Men | 2021-05-01 |
| Yes | No | No |
 | Fairy Tale | Ladies | 2021-05-10 |
| Yes | Yes | No |
 | Forest Tale | Ladies | 2021-05-10 |
| Yes | Yes | No |
 | Crown Penguin Dress | Ladies | 2021-05-21 |
| Yes | Yes | No |
 | Tiara Penguin Dress | Ladies | 2021-05-21 |
| Yes | Yes | No |
 | Traum Singer Tuxedo | Men | 2021-05-31 |
| No | No | Yes |
 | Blau Rose Tuxedo | Men | 2021-05-31 |
| No | No | Yes |
 | Tre Stelle Cook | Ladies | 2021-06-01 |
| Yes | No | No |
 | Song to taste. | Men | 2021-06-01 |
| Yes | No | No |
 | King of Smile | Men | 2021-06-11 |
| Yes | Yes | No |
 | Happy-Happy Clock Rabbit | Ladies | 2021-06-11 |
| Yes | Yes | No |
 | Carnation Dress of Reminiscence | Ladies | 2021-06-21 |
| Yes | Yes | No |
 | Dawn Sky-colored Gradation Dress | Ladies | 2021-06-21 |
| Yes | Yes | No |
 | Blue City Summer Dress | Ladies | 2021-06-30 |
| Yes | Yes | Yes |
 | Memorial Heart Coordination | Ladies | 2021-06-30 |
| Yes | Yes | Yes |
 | Aurora Rainbow Coat | Ladies | 2021-06-30 |
| Yes | Yes | No |
 | Petit Rainbow Coat | Ladies | 2021-06-30 |
| Yes | Yes | No |
 | Pirates of Penguin | Ladies | 2021-07-01 |
| Yes | No | No |
 | Elegant Pirates | Men | 2021-07-01 |
| Yes | No | No |
 | Beast Heart Girl | Ladies | 2021-07-09 |
| Yes | Yes | No |
 | Beast Heart Buddy | Ladies | 2021-07-09 |
| Yes | Yes | No |
 | Burning Dawn Matoi | Men | 2021-07-20 |
| Yes | Yes | No |
 | Cooling Dusk Matoi | Ladies | 2021-07-20 |
| Yes | Yes | No |
 | Sunset Beach Girl | Ladies | 2021-07-31 |
| Yes | Yes | Yes |
 | Marine Shell Girl | Ladies | 2021-07-31 |
| Yes | Yes | Yes |
 | Little Strawbearry | Ladies | 2021-08-01 |
| Yes | No | No |
 | Denka Panda | Men | 2021-08-01 |
| Yes | No | No |
 | Messenger of Love | Ladies | 2021-08-10 |
| Yes | Yes | No |
 | Messenger of Hope | Men | 2021-08-10 |
| Yes | Yes | No |