- Digital Single
- Zoobles OST (쥬블스)
"Zoobles OST" is Rainbow's fourth Korean digital single. Both tracks were used as theme songs for the Korean/Japanese anime Zoobles!. The song "I Love Zoobles", which was used as lead track, was recorded in three different languages, Korean, Japanese and English, and although a music video was produced for each version, neither the Japanese or the English versions were officially released.