Otherworldly Air Gunship

Added Return to 1937 mode and corresponding leaderboard. You will use the H-6 modified gunboats to resist the continuous flow of Japanese invaders and vehicles, guarding the city.

1. Added zombie mode, where you can build giant towers amidst the zombie horde. And choose to switch control gunboats, helicopters, and armored vehicles 2. Three new weapon unlocking options have been added, including parent-child shells, sniper shells, and bouncing shells

1. Added online mode, where you can compete with friends to see which team can achieve the maximum coloring area. Seizing neutral units helps with coloring. The homeowner can set the game time and the number of neutral units.