Bio Defence: Tower Defense

Bio Defence is a tower defense strategy game set in a microscopic world. Defend your Core against waves of viruses and bacteria with a carefully chosen tower loadout. Clear groups with splash attacks and use the skills you unlock to freeze enemies or time meteor strikes before a boss reaches your base.

Build and upgrade your defense
Unlock 18 tower types as you progress through the campaign. Spend earned gold on upgrades between missions, try different tower combinations and prepare for the next wave.

Face bosses and choose your skill
Battle 10 different boss types alongside Immuno, your guardian. Unlock 8 combat skills and equip one for each round. Choose the right moment to use it and support your towers.

Earn achievements as you strengthen your defense. Play in 10 languages, including English.

Free to download. Contains ads and optional in-app purchases, including a monthly VIP subscription. A player profile with a nickname is required to start. An internet connection is needed to create your profile for the first time and use online features.