Use the "A" and "D" keys on the keyboard to move your plane sideways and avoid enemy fire.
Some players seem to use only a mouse to play the game.
Here, we need to avoid anti aircraft fire from the enemy space cruiser.

Postscript:
From reflection on the past, our aircraft games tended to be too difficult.
According to global achivements data, 15.5% of players complete this game.
This time, we decided that the difficulty level of this game is appropriate.

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.