NormalTanks is a fast-paced multi-directional arcade shooter featuring classic run'n'gun gameplay with 3 difficulty settings.
There are 8 challenging, dynamic and hazardous environments to tackle and inside every enemy base or forests and mountains, you have to choose your battle tactics carefully to survive!
Over the 30 dangerous enemies types on your heroic way, including various tanks, heavy war machines and helicopters, robots and biomechanical creatures, pillboxes and SSM missile sites and every level ends with its own, unique boss to defeat.
Crash, kill and destroy them all to move forward! By using special power-ups, you can upgrade your tank abilities: cannon, machine gun, and armor to help you progress.

Some levels transform you to tiny bot to stealth pass near the enemies and deactivate energy fields or to giant walking robot, which demolish everything on his way to the alien's hive!

Source: http://www.beatshapers.com/normaltanks