









| Label: | RCA 74321 975182 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single , Enhanced) |
| 1 | Unbreakable (Single Remix) | |
| 2 | Never Knew I Was Losing You | |
| Enhanced | World Of Our Own US Video & Exclusive Footage |
| Label: | RCA 74321 97522 2 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single , Enhanced , Limited Edition) |
| 1 | Unbreakable (Single Remix) | 4:33 |
| 2 | Evergreen | 4:03 |
| 3 | World Of Our Own (US Mix) | 3:33 |
| Enhanced | Westlife Fans Role Of Honour |
| Label: | RCA BREAK01 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single , Promo) |
| 1 | Unbreakable |
| Label: | BMG UK & Ireland 74321 965542 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single) |
| 1 | Unbreakable (Single Remix) | |
| 2 | Never Knew I Was Losing You |
| Label: | BMG UK & Ireland 74321 968222 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single , Promo) |
| 1 | Unbreakable | |
| Label: | RCA 74321 965552 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single , Enhanced) |
| 1 | Unbreakable (Single Remix) | 4:32 |
| 2 | Never Knew I Was Losing You | 4:40 |
| Video | World Of Our Own (US Mix) (CD Rom - World Of Own US Video) | 3:30 |