Submarine Torpedo Targeting system added in V1.1.
You can easily sink enemy battleship. Also infinite torpedo service is added.


1. Introduction

Thank you for downloading this application.

This game is a real-time simulation game for experiencing a naval battle centered on a battleship.
In this game, the player becomes a genius commander named “BATTLESHIP-ACE”,
Control various battleships, destroyers, submarines, aircraft carriers, thunderplanes and dive bombers and defeat enemy forces.

Notice: This is not network game for multi-players.

2. Game Summary

There are two modes in this game.
One is [1] Beginner mode and the other is [2] Strategic Campaign mode.

[1] Beginner Mode

The enemy to appear is a little poor, but you can easily participate in your favorite sea battle.
It is recommended to play in this mode at first.

[2] Strategic Campaign Mode

- Win over each naval battle stage and bring victory to the war.
- The player participates in the battle as Battleship-Ace operating the battleship Yamato or the battleship Iowa.
- Start the campaign from the first stage.
- If you win on the stage, you can advance to the next stage. You can also win a victory bonus.

3. Physical law of this real-time simulation world

To realize the short-time and amazing spectacle battle of huge battleships, some of the physical
laws in this Real-Time Simulation World are carefully modified.

[1] Modification to make Firing Range 1/10 without change of shell flight time.
- Gravity Acceleration and Initial speed of the gun are modified.
[2] Modification to make Speed of Sound faster:
- Every sound can be hared at the same time even if far.

I carefully studied these conditions for realizing the short-time and amazing spectacle battle.
Finally I found this modification. Please enjoy this unbelievable user experience.

4. Operation explanation

Please see the operation instructions in this game.

5. Basic way of sea battle

[1] Battleship
Attack the enemy with the main gun. Make sure to fire and win taking into consideration the
movement distance of the enemy.
[2] Destroyer
Torpedo attacks are effective in battle with enemy battleships. The main gun is poor.
In battles with enemy submarines, use detonation to attack. Submarine position detection
is most important for victory.
[3] Submarine
Anyway, dive first. Search for enemy ships at periscope depth and do torpedo attacks.
The speed of the submarine is so slow that it is important to go ahead.
[4] Aircraft carrier + Dive Bomber + Torpedo Bomber
First, search for the enemy, and after finding the enemy, launch attack planes.
After reaching above the enemy fleet, attack as a crew of the dive bomber and the torpedo bomber.

6. Function improvement by bonus

[1] Three enhancements are available to improve basic elements
1) It is possible to improve the destructive power of battleship shell
2) It is possible to improve the defense of battleship armor
3) It is possible to improve 3 crew members' ability

You can strengthen (1)(2)(3) at the same time with 100 gold.
On the other hand, it can be strengthened individually by watching advertisement videos.
By strengthening both, you can achieve a greater effect.

[2] Two types of tickets available if needed during a naval battle
1) Damage Recovery Ticket
2) Battle Time Extension Ticket

7. About Gold

[1] Funded as military funds before the start of every campaign stage.
[2] Earn as a "winning bonus" when you first win in each campaign stage.
[3] If you damage the enemy in each campaign stage, get the gold equivalent to the damage amount.
[4] If the friendly fleet is damaged in each campaign stage, the gold equivalent to the damage will be seized.
[5] It is also possible to obtain gold in-app purchases.

8. Conclusion:

Thanks again for downloading this application.
Please enjoy this real-time simulation of battle of battleship.

Null City Realtime Simulations

What’s New

Version 1.2

The submarine torpedo attack system has been updated to the strongest function. We introduced the best target system capable of torpedo attacking enemy ships moving in the distance, and a torpedo attack system in which a new torpedo set is loaded after a certain time if there are no remaining torpedoes. The offensive power of the submarine has improved at once. Please try it by all means.

Ratings and Reviews

3.1 out of 5
11 Ratings

11 Ratings

loves war ,

Awesome game :)

I love this game a lot keep updating!

NaaliiAloha ,

Needs the underwater sea to be realistic

Hey guys, please fix the underwater sea cuz I can’t see the underwater (except the torpedo which is good) because it’s light blue, so I’m just telling you this to make it realistic like other submarine games on mobile, so pls make it realistic for the next update and I hope you guys read this too.

Eriptron ,

Looks great.

UI is a kluge design. Plays poorly. Nothing close to reality. That and next to no documentation that I can find. Deleted. Moving on.

App Privacy

The developer, Hitoshi Yasui, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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