If you search for "Gunship Battle" on Google Play or the Apple App Store today, you will find Gunship Battle: Total Warfare or Gunship Battle 2 . Joycity has long removed version 1.3.1 from official distribution for several reasons:
Let’s be transparent. There are legitimate dangers to seeking a from unofficial sources.
Provides a version history list for players to select specific historical builds. Installation Guide
The addition of the Gunship Raider expanded the fleet options.