What is the coolest thing about having your own city?
While there may be fun to play around or to look proudly over your city, the real fun begins when the enemy attacks! Upgrade your walls and cannons, defeat the enemy over and over, as they grow stronger!

What is tower defense? It is a strategy. It is brain burning! How to deal with excessive brain-burn and being too tired? Put it aside and calm down.
Eternal Cannon is the perfect combination of idle tapping and tower defense, offering a unique experience with exceptional style.
Eternal Cannon takes the idle incremental game style that players have come to know and love, and stretches the limits of what they can be.

Game features:
---- More than 60 upgrades and research projects!
       Your wall can be upgraded and cannons can be transformed! The walls can be upgraded from weak fences to nearly indestructible walls. What is your defense against enemy attacks? The most basic, you can also reflect the enemy's attack back or use it for your own use! The cannon can be turned ginormous, not only to spew shells to attack the enemy but also to have more features! Bullets double hitting! Fatal critical hits! Poisonous gas for grouped enemies, it is so domineering! All the upgrades will become a must-have!

---- A powerful skill system!
       Freeze the enemy or throw a full-screen bomb. Repair the wall quickly, or let the gold coins fall like rain. Strengthen bullets or become Immune to the enemy for a time!

---- Real-time leaderboards!
       Always see if your ranking is rising or falling, and compete with players all over the world to see who's strategy is stronger and rises faster.