| App Type | game |
| Release Date | Jul 21, 2021 |
| Details Last Modified | March 28, 2026 (6 months ago) |
| Developer | Birb Games |
| Publisher | Birb Games |
| Genres | Adventure, Free To Play, Indie, Strategy |
| Supported Systems |
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| Windows |
| Price | Free |
| Required Age | 0+ |
| Achievements | 41 |
| Support Email | sjh000407@naver.com |
Firewall, vaccine, cleaner... Place various blocks to protect your CPU! Vaccine A is a sandbox defense game, filled with parody of various programs.
Includes level editor
Single-player
Steam Achievements
Steam Cloud