A free app for Android, by Rocket Game Studio.

Merge Monster: Frog Evolution is a strategy game that combines the mechanics of merging and evolution. The main goal is to defend the kingdom by merging and evolving monsters, troops, and more. The gameplay is simple and easy to understand, yet very fun and engaging. It is a combination of a strategic and tactical game. You will need to use your finger to draw the troops, evolve them, and use them to fight against the enemies. The enemies will also evolve and become more powerful as the game progresses.

The gameplay is simple and easy to understand. You will need to use your finger to draw the troops and evolve them.