Efun-巨砲連隊 is a free-to-play strategy game that takes place in a realistic WWII battleground. The game allows players to build their own modern military base and develop their high-tech armored forces. With thousands of players online, players can compete for resources, conquer cities, and build the strongest army to reign supreme. The game features realistic graphics, simple gameplay, and a variety of features such as tank customization, terrain simulation, and military exercises. The game also includes an alien technology system and a generals system that allows players to recruit famous WWII leaders to help them in their battles.

The game's interface is easy to navigate, and players can enjoy the game's simulation and combat features simultaneously. The game is available on Android 9.0 and is developed by EFUN.

Note that the game is rated for ages 6 and up and contains in-app purchases. Contact information for the developer is available on the game's official Facebook page.