Merge TD: Idle Tower Defense is a new tower defense game developed by DoubleJump Games Inc. that offers a unique blend of merge, tower defense, and idle games. In the game, you must merge towers by dragging them on top of each other to build up your defenses against waves of zombies terrorizing the land.

The game features 30+ towers to merge and unlock, multiple regions to explore, and unique events to participate in. You can progress even while you're offline and claim your idle earnings when you come back. What's more, you can play online or offline without any connection required.

Merge TD: Idle Tower Defense is a refreshing take on the traditional tower defense game that will keep you entertained for hours. It is available for free on iPhone.