A free program for Android, by SayGames Ltd.

Merge Legions: war battle game is a real-time strategy battle game with a twist. You get to control a powerful military force and command it in battle. Your troops can be merged to become stronger, and each battle you win gives you more power. You can even turn them into unique heroes. 

Merge Legions lets you build and control an army and develop it into a powerful military force. The best part of this game is that you get to choose from different troops, like swordsmen, archers, snipers, etc. You can also collect other magical creatures, like dragons, dwarves, and more.

Merge every item in your kingdom to defeat your rivals and protect your lands.