The game was released on time.
Game Tips
1: Destroy the dummy battleship.
2: Destroy a certain number of enemies. About 70. (The number depends on attacks by a friendly ship.)
3: Destroy the enemy cruiser. Beware of anti aircraft fire.
4: Destroy all enemy ships. Destroy from the surrounding cruisers.
5: Destroy the enemy fortress. Destroy the escort cruiser first.