- Steam App
- BULLET GIRL：ZOMBIE DEFENSE (4609110)
- Event type
- patch note
- Published
- 2 May 2026 - 11:29:30 UTC
- Source
- steam_community_announcements
# v1.1 — The Lab Horror Awakens The lab finally lets out what it's been hiding. ## ⭐ New Boss Battle: The Mutant A grotesque experiment, sealed away for too long, breaks free. Defeat it in the Lab. - A new boss, a new challenge ## 🔥 Endless Mode — Boss Encounters The battle just got crueler. Mutants now stalk endless mode: - **Wave 15**: First mutant appears - **Every 10 waves**: It returns, stronger than before