3rd Anniversary Song Campaign was a song campaign celebrating Project SEKAI's 3rd Anniversary.
Song list
| Release date | Song | Producer(s) | Version(s) | MV |
|---|---|---|---|---|
| ? | ○○ | ? | VIRTUAL SINGER ver. SEKAI ver. |
Original MV |
| ? | ○○○○ | ? | VIRTUAL SINGER ver. | Original MV |
| ? | ○○○○○○○ | ? | VIRTUAL SINGER ver. SEKAI ver. |
Original MV |
| ? | ○○○○○○○○○○○○○ | ? | VIRTUAL SINGER ver. | 3D MV |
| ? | ○○○○ | ? | VIRTUAL SINGER ver. SEKAI ver. |
No MV |
| ? | ○○○○○○○○○ | ? | VIRTUAL SINGER ver. | Original MV |
| ? | ○○○○○○○○○○○○ | ? | VIRTUAL SINGER ver. SEKAI ver. |
3D MV |
| ? | ○○ | ? | VIRTUAL SINGER ver. | No MV |
| ? | ○○○○○ | ? | VIRTUAL SINGER ver. SEKAI ver. |
Original MV |
| ? | ○○○○ | ? | VIRTUAL SINGER ver. | No MV |