| Nu Nu (Radio Mix) | 3:58 | |
| Nu Nu (Original Version) | 5:02 | |
| Nu Nu (Nu Appella) | 4:50 | |
| Nu Nu (Instrumental Mix) | 4:48 |
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Nu Nu (12") | Clubhouse Records | CHR 109 | US | 1991 | |
| Nu Nu / Summertime Summertime (12") | ISBA Music Entertainment Inc. | IP-12-103 | Canada | 1992 | |
| Nu Nu (12") | Mercury | 866 445-1 | US | 1992 | |
| Nu Nu (12") | Mercury | 866 677-1 | Netherlands | 1992 | |
| Nu Nu (12") | Mercury | MERX 366 | UK | 1992 | |
| Nu Nu (12", Promo) | Mercury | 866 445-1 | US | 1992 | |
| Nu Nu (7", Single) | Mercury | 866 676-7 | Europe | 1992 | |
| Nu Nu (CD, Maxi) | Mercury | 866 445-2 | US | 1992 | |
| Nu Nu (CD, Maxi) | Mercury | 866 677-2 | Netherlands | 1992 | |
| Nu Nu (CD, Maxi) | PolyGram Records (Australia) | 866 677-2 | Australia | 1992 | |
| Nu Nu (CD, Maxi) | ISBA Music Entertainment Inc. | IP-12K-102 | Canada | 1992 | |
| Nu Nu (12") | Mostiko | 23 210266 | Belgium | 2004 | |
| Nu Nu (12") | Mostiko | 23 21224 6 | Benelux | 2004 |