Zombie Defense - Merge Turrets

Don't come here!
The end of the world is coming, there is only this oasis left in the world, defend this last source of life!
Game features:
▲ Four kinds of tower defense, unlimited upgrade
Four turrets: high attack turret, deceleration turret, poison attack turret, range attack turret; the game does not require any charge, only the infinite synthesis of your turrets, level 1, level 2 ... level 10 ... level 100 ... level 1000 .
▲ Zombies never stop
Wave after wave of zombies will never stop, and your turret will never go out! When you leave the game, you can also get income!
▲ High drop rate of Boss
Every 5 levels a Boss, defeat Boss to get a lot of gold coins and high-quality turret fragments to evolve your turret!
There are more than 2,000 levels in the game, which are still being updated. Come and play NOW!