It's not a vaccine program
Build firewalls to protect your CPU, and strategically build vaccines to keep malwares away!
Protect your base with 150+ blocks, skills and upgrades!
Don't give up! Earn exp every game and apply new perks!
Can you become true security master?
Vaccine A doesn't have any ads, in-app purchases. Just enjoy!
Every programs and parodies appear in this game is made with pure respect, and no copyright issues intended.