Zone of Biology

Bio Zone is a defense-style game where you strategically position and combine weapons to eliminate zombies. Set in a post-2000 Earth, the planet is ravaged by pollution and overrun with mutated creatures. Amid this turmoil, a solitary stronghold remains. As the leader of this fortress, you are responsible for safeguarding the last bastion of human civilization. Vanquish zombies to gain coins and use them to acquire basic weaponry. Enhance your arsenal by merging lower-tier weapons into more powerful ones on the fortress's core interface, boosting your attack capabilities. Ensure the zombies don't breach your base!

Controls
Use the left mouse button to drag and place, as well as merge, the weapons.