Merge Defense

A royal crystal waits at the end of the road. Monster waves march straight for it, and Merge Defense sets the battle around turret lines placed along their path. Matching two identical guns creates a stronger tower with better combat power. Fallen enemies drop the resources used for upgrades. Giant bosses appear later, pushing against the same defense line. Treasure chests and achievement rewards add extra prizes between battles.

How to play?

Place turrets beside the road and block the army before it reaches the crystal. Activate short boosts for faster fire or stronger attacks. Another skill slows the enemy line. One more bonus raises gold income. Each power works for a limited time, then waits for its cooldown before returning.