Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Omega Merger | 2023 | Roxy Collins | Buy |
| 2 | The Omega Lesson | 2023 | Roxy Collins | Buy |
| 3 | The Omega Verse | 2023 | Roxy Collins | Buy |
| 4 | The Omega Game | 2024 | Roxy Collins | Buy |
| 5 | The Omega Game: A Reverse Harem Omegaverse | 2024 | Roxy Collins | N/A |
| 6 | The Omega Project | 2025 | Roxy Collins | Buy |
Billionaires in Heat is Roxy Collins’s longest series at six books, published from 2023 to 2025. The series combines omegaverse dynamics with billionaire romance, using corporate language in the titles — The Omega Merger, The Omega Lesson, The Omega Verse, The Omega Game, and The Omega Project. Each book pairs the heat cycles and pack dynamics of omegaverse fiction with the wealth and power of billionaire romance.
The series represents the intersection of two popular romance niches, giving readers both the biological urgency of omegaverse and the glamour of billionaire settings.