Hollow Heart — Steam game overview
Stored observation / content update:
Hollow Heart is a growth‑simulation game about forbidden human transmutation and twisted sisterly devotion. As the elder sister, you gather materials, rebuild your little sister’s soul and body, and attempt to revive her in a more “perfect” form.
Upcoming game. Player and sales observations may not yet exist.
Revenue is modelled, not confirmed sales. See the methodology and uncertainty range.
| Statistic | Recorded value |
|---|---|
| Steam App ID | 4524120 |
| Developer | Phantom Doll Lab |
| Publisher | Phantom Doll Lab |
| Concurrent players | Not available |
| Total reviews | 0 |
| Positive reviews | 0 |
| Release date | 2027 |
| Price | Not available |
| Estimated gross revenue (low / central / high) | USD 0 / 0 / 0 |