# レトロNESエミュレータ > A nostalgic 8-bit game console emulator. You can immediately test key operation using a custom sample ROM. Canonical page: [https://chrome-stats.com/d/jp.keiji.retrones](https://chrome-stats.com/d/jp.keiji.retrones) ## Overview - **ID:** `jp.keiji.retrones` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** XRシステム - **Category:** GAME\_SIMULATION - **Downloads:** 1 - **Last updated:** 2026-05-06 - **First published:** 2026-05-06 - **Publisher country:** JP - **Data as of:** 2026-09-11 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=jp.keiji.retrones) - **Privacy policy:** [https://xrdaichusystem.jp/ranking/privacy-policy\_nes.html](https://xrdaichusystem.jp/ranking/privacy-policy_nes.html) ## Description [Experience 8-bit masterpieces on your smartphone]

This app is an emulator for the NES/Famicom, a home game console that took the world by storm in the 1980s.

You can easily recreate the gaming experience of that era on your smartphone by loading your existing .nes format ROM files.

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■ Immediate operation check after installation
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This app includes a sample ROM (test_rom.nes) created by the developer for operation checks.

(This is a self-made ROM with clean copyright, so you can use it with confidence.)

Simply launch the app, and the sample ROM will be automatically loaded.

The following "controller test screen" will be displayed on the screen.

HELLO NES EMULATOR
CONTROLLER TEST

A B SL ST UP DN LT RT

------------

The eight items on the screen correspond to the respective buttons.

• A / B: A / B buttons

• SL / ST: SELECT / START buttons

• UP / DN: Up / Down on the directional pad

• LT / RT: Left / Right on the directional pad

When you press a button, the indicator at the corresponding position changes from
"- (not input)" to "■ (input)".

This allows you to see the following at a glance:

● Is the screen rendering working correctly?

● Does it run smoothly on your device?

● Do all touch buttons respond correctly?

● Are all directions on the directional pad recognized correctly?

● Do simultaneous button presses (e.g., A + Right, B + Up, etc.) work correctly?

For those who want to "try it out before purchasing" or "check compatibility with their device,"
you can verify operation immediately after installation without needing to prepare additional ROMs.

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■ Main Features
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● Supports reading .nes files

You can immediately launch ROM files saved on your device by selecting the file.

● Includes a sample ROM for testing custom key operations

You can check the operation of all buttons immediately after installation without needing to download anything additional.

● Touch operation optimized for the screen

The directional pad, A/B buttons, and SELECT/START buttons are placed on the screen.

Button size and layout have been adjusted for comfortable one-handed gameplay.

● Wide Mapper Support

Supports major mappers such as NROM / MMC1 / UxROM / CNROM / MMC3 / AxROM / Mapper 87, etc.

Many software titles will work.

● Persistent Save Data Storage

Save data is stored in the device's persistent storage so that it is not lost even when the app is updated.

● Accurate CPU/PPU Emulation

By adjusting NMI/IRQ timing, screen flickering and freezing are suppressed,
resulting in smooth operation.

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■ If a ROM does not work
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First, please check that the app itself and all buttons work correctly using the included sample ROM (test_rom.nes).

Furthermore, if your .nes file does not function correctly, please contact us and we will perform a free operational check.

We will investigate the mapper and special functions being used and consider addressing the issue with an update to the extent possible.

Please feel free to contact us at the following address:
Contact: doi.keiji.zm@gmail.com

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■ Notes on Use
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・The included sample ROM (test_rom.nes) is a self-made ROM by the developer.
Other ROM data is not included in this application.
・Please be sure to use ROM files that you legally own.
・Please use in compliance with copyright law and other applicable laws.
・The use of illegally downloaded ROM files is strictly prohibited.

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■ Recommended for:
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・Those who want to play their favorite games from the past again
・Those who want to easily enjoy retro games on their smartphones
・Those who want to check the key response before using it seriously
・Those looking for a simple and fast emulator

Please enjoy the masterpieces of the 8-bit era. ## Rankings - #3,106,104 — Overall ## Similar extensions and apps - [Retro8 (NES Emulator)](https://chrome-stats.com/d/com.neutronemulation.retro8) — 43,681 users, 2.28 / 5 - [8BIX — NES Emulator](https://chrome-stats.com/d/com.krokodilushka.eightbix) — 39 users - [FC Emulator - NES8x Retro](https://chrome-stats.com/d/com.fcretro.emulator) — 17,820 users - [NES.emu (NES Emulator)](https://chrome-stats.com/d/com.explusalpha.NesEmu) — 137,433 users, 4.31 / 5 - [Emu8Bit XL (NES Emulator)](https://chrome-stats.com/d/com.pentawire.emu8bitxl) — 40,614 users, 3.00 / 5 - [Nessie (8 bit emulator)](https://chrome-stats.com/d/rascsoft.nessie) — 8,000 users - [HiNES - NES Emulator](https://chrome-stats.com/d/com.sohiso.hines.free) — 1,561 users - [NESDroid](https://chrome-stats.com/d/ca.halsafar.nesdroid) — 30,075 users, 3.84 / 5 - [Retro Emulator – Classic 16Bit](https://chrome-stats.com/d/retro.old.bit.pixel.emulator.classic) — 159,847 users, 4.67 / 5 - [HiNES Pro](https://chrome-stats.com/d/com.sohiso.hines.full) — 5 users - [Neon Emulator - Retro Games](https://chrome-stats.com/d/com.neonretro.emulator) — 11,045 users - [Retro Game Emulator NostalgNes](https://chrome-stats.com/d/com.nostalgiaemulators.nes.games) — 90,212 users, 4.61 / 5 --- Source: [Chrome-Stats](https://chrome-stats.com/d/jp.keiji.retrones)