A free app for Android, by Ararat Games.

Merge Tanks is a 3D arcade game where you play as a commander, taking on missions in the battles. Each mission consists of multiple levels, and the goal is to reach the end while eliminating as many enemy tanks as possible. You’ll have to deal with different opponents with different tanks. 

You’ll have to plan your movements carefully. If you’re too slow, the enemy will attack you. If you’re too quick, you’ll get destroyed by the bomb. It’s important to know when to take on a mission, and when to wait. It’s also important to know your weapons.