DuckStation Tutorial

Last updated October 30, 2023

About DuckStation for Android

This tutorial is to help you with DuckStation for Android. DuckStation is considered a top PlayStation 1 emulator. All games emulate flawlessly. In addition to up-scaling 3D graphics (a staple feature in all PS1 emulators), DuckStation comes equipped with all the modern PGXP correction features. These corrections fix the inaccuracies that are evident when PlayStation 1 graphics are enhanced.

DuckStation has been around longer on Windows. This Android counterpart is relatively new and still trying to nail down exactly how it should work. Hence, in future releases, you may find that certain menu items or features have been moved around. Or a new icon appears on the main screen offering a new feature.

Should you use DuckStation?

With all the emulator offerings as of 2024, should you use DuckStation? I suppose I would say yes just because it's free. ePSXe for Android is a good emulator, too. It's more user-friendly than DuckStation. ePSXe works on Chromebooks while DuckStation isn't available for them. But yet, ePSXe costs $4 US. It requires some setup as well.

Multi-system emulators such as RetroArch emulate PlayStation 1 great, too (and it's free). Although multi-system emulators can come off as intimidating if you're a beginner to emulation. Anyway, to wrap this up, 'free' can't be beat so going with DuckStation is fine.

Downloading DuckStation

This is the easy part. Simply search “duckstation” in the Google Play store. Or follow the direct link below:

• DuckStation in Google Play

Notes about downloading ISOs

Preparing your PSX ISOs

Before we jump into loading games with DuckStation, your PlayStation 1 ISOs need to be collected into a folder. Upon downloading a PlayStation 1 ISO, it'll be in one of these formats:

• 7Z, RAR, ZIP: These days, most ROM sites typically deliver ISOs in “7Z” format. They're less commonly delivered in ZIP and RAR. Think of 7Z and RAR as ZIP files, but with better compression. I'm going to help you extract them; they must be extracted to be loaded with DuckStation.
• CHD: If your PlayStation 1 ISOs are in “CHD” format upon download, they're uncompressed and ready! In this case, all you need to worry about is deciding where you want your PlayStation 1 ISOs to be located on your device. You can still follow my directions below; just ignore all the stuff about extracting a 7Z file. Also, you can use any file manager app to move around CHD files. You don't have to use “ZArchiver” in this case.

Anyhow, here are directions on how to extract 7Z files and organize your PlayStation 1 ISOs somewhere.

1. First, you're going to need an app that can extract 7Z files (and in less common cases, ZIP and RAR files). I recommend ZArchiver (it's free).
2. Open ZArchiver. You need to decide where you're going to house your PSX ISOs. It doesn't matter where you put them. Some people keep them in the Downloads folder. What I like to do is create a folder called “ROMs” and inside that folder create folders for “PlayStation 1”, “Super Nintendo”, etc. In ZArchiver, to create a new folder, tap the then . Proceed to the next step when you're ready.
3. Return to your device's main root directory (the default screen when you open ZArchiver). Tap Download. Once inside, long press your PSX ISO and tap Cut.
4. Navigate to the folder where you want your PSX ISOs to be. Tap the clipboard icon to paste the PSX ISO there. Tap on the file (not a long press) and tap Extract here. Depending on the size of the file, it may take 10-20 seconds or two minutes to finish extracting.
5. Depending on how the ROM site set up the 7Z archive, it will either: (1) extract the ISO files here, or (2) extract the ISO files into a new folder with the name of the game. Either way is fine and doesn't require any extra steps for setting things up with DuckStation.
6. Lastly, we don't need the 7Z file anymore so you can delete it. Long press it and tap Delete. Also, if you don't foresee yourself extracting more 7Z files in the future, you can go ahead and uninstall ZArchiver (long press its app icon and tap Uninstall).

Setting up the BIOS

These directions with the BIOS are assuming you've read through Preparing your PSX ISOs, and that you decided where your PlayStation 1 ISO's will be located on your device.

The PlayStation 1 BIOS is required to boot games. This is a separate download after you've downloaded DuckStation. Of which, you can download it right here:

• PlayStation 1 BIOS (236 KB). It's a zip file with the extension changed to “_ip”.

Next, move this zip file to a location where you want the BIOS to be on your device. It doesn't matter where. I recommend keeping everything neatly together, so the following directions will have you place the BIOS where your PlayStation 1 ISO's are located.

1. You can use any file manager app for these steps. Your device most likely already comes with one. For these directions, I'm going to be using Astro File Manager (it's free).
2. The first step is to navigate to your device's “Download” folder. Astro's opening screen has a direct shortcut to the Download folder.
   • Note: If you're using an advanced file manager, it might start you at the true root of your device. If that's the case, you can find your main root directory by going to storage > emulated > 0.
3. In your Download folder, you're going to see “ps1_bio._ip.zip” - that's my BIOS zip file. We need to move this to the folder where your PlayStation 1 ISO's are located (again, this is a recommendation, not a requirement). Select the dot menu then select Move to.
4. Select the device icon to go up one directory, which is the main root directory. From here, navigate to the folder where your PlayStation 1 ISO's are located.
5. Once there, we can finish the action of moving the BIOS zip file by selecting Move.
6. Next, select the dot menu then select Extract Here. You'll see “Scph1001.bin” appear.
7. We don't need the zip file anymore so you can delete it. Select the dot menu on it, then select the trash bin icon. The final step for adding the BIOS is a part of the process for loading a game, so keep reading.

Loading a PSX ISO

The title for this section is slightly misleading. I'm going to show you how to load a PSX ISO. However, there are certain steps that need to be performed to do that. I'm going to show you how to add a game directory, then to perform the final step for configuring the BIOS. These are just one-time steps that you do not need to do again.

I've walked you through preparing your PSX ISOs and the BIOS. Now, we can open DuckStation and finish setting everything up.

1. Open DuckStation. Upon opening DuckStation for the first time, it wants you to add a game directory. Tap Add Game Directory to proceed.
2. Navigate to the folder where your PlayStation 1 ISOs are located. Then, tap Use this folder.
3. You should see your PlayStation 1 games listed in DuckStation.
   • Games not showing? After adding your game directory (your PSX ISOs folder) to DuckStation, you may run into an issue where not all of your games appear on the games list. It's important to note that DuckStation only supports ISOs that are in the following formats: BIN (BIN/CUE), ISO, IMG, CHD, ECM, MDS, and PBP. And they must be extracted from their 7Z, RAR, or ZIP archives. If you need help with extracting, the section further above about preparing your ISOs covers that.
4. Tap a game to try loading it. DuckStation will prompt you: the BIOS is missing and you need to locate it. Tap Yes to proceed with locating it.
5. As I recommended in Setting up the BIOS, I had you place the BIOS in the same folder where your PlayStation 1 ISOs are located. Hence, on this step you need to navigate to that location on your device. Once there, tap the BIOS “Scph1001.bin” to select it.
6. That's it! DuckStation will prompt you with a confirmation that the BIOS is imported and ready. Finally, tap a game to load it. Games may not load immediatley, so give DuckStation a moment to load them.
   • Tip: Did you continue adding more games during this session? You can refresh the game list by pulling down on it.
   • Having issues? If you're having issues loading games, continue reading here: Q: Help! I get a black screen when I load games!

Q: My PAL PS1 game is giving an SBI error!

Upon loading a PAL version of a PlayStation 1 game, you may receive this error:

You are attempting to run a libcrypt protected game without an SBI file:
[name of your game]
Your dump is incomplete, you must add the SBI file to run this game.

Some PAL PS1 games (mostly by Infogrames and EA) use LibCrypt anti-piracy protection. For these games, you must have the SBI file in order to properly emulate them properly.

Depending on where you downloaded the game, an SBI file might already be included in it. If that's the case, simply make sure the SBI file and your PS1 ISO have the same name. If the SBI file isn't there with your PAL ISO, you can download a collection of all SBI files below.

• All PAL PS1 SBI files (109 KB)

If you need more help, check out this page on CDRomance.

The Pause menu

The Pause menu is important. This is where you'll access all the features and everything DuckStation has to offer. When a game is running, you'll see a pause icon in the upper-right of the screen. Tap it to access the Pause menu.

The Pause menu presents you with a row of four icons. The first three are menus.

• The Game Functions menu is what you immediately see when you tap the Pause icon. It contains game-specific features such as save states, fast forward, and pass codes (cheats). And this is where you'll go to reset the game or exit it.
• The Summary gives you some details about the ISO.
• The App Settings is where you can tweak the graphics and audio. This menu is important! This is where you go to troubleshoot your games if they're running slow or buggy.
• The Controller Settings menu gives you many options to customize the controls, onscreen overlay buttons, and gamepad configurations.
• This just closes the Pause menu.

Q: Graphics appear broken!

DuckStation is an awesome emulator, but it's not perfect. You may find that certain 3D graphics are broken. Maybe pieces of the floor are missing or other graphics have disappeared. Fortunately, this has an easy fix!

1. While a game is running, tap the Pause icon .
2. Tap the sprocket for the general settings. Drag the menus left to scroll to the right, and look for Graphics.
3. Scroll down and toggle off PGXP Texture Perspective Correction, as shown here . Return to the game and the graphics should be fixed.

This could be done globally to affect all games. I think it's better to do it on a per-game basis (the directions above) because not every game will have broken graphics.

Setting up a gamepad

This calls for several steps.

Didn't work? If automatic mapping was unsuccessful, you can try to manually configure the buttons one at a time on the “Port 1” screen. If your gamepad buttons are not responding, make sure it's connected to your Android device. And make sure your gamepad is fully charged (there should be an LED light indicating that it's on). If you're still having problems, that'll be specific to your gamepad - try searching Google or YouTube using the full name of your gamepad plus your exact issue. For example: 8bitdo pro 2 not responding.

PGXP corrections

'PGXP corrections' are the hottest feature of modern PlayStation 1 emulators. The original PlayStation 1 wasn't designed to be up-scaled to high resolutions. So when PlayStation 1 emulators upscale graphics, you begin to notice obvious faults in the 3D animation and 3D texturing.

View the sample comparisons around here. The image above shows PGXP correcting texture mapping. The GIF animation shows PGXP correcting jittery animation. Pretty cool, huh?

This Android version of DuckStation already has PGXP corrections enabled by default. So you don't need to do anything. Just load a game and enjoy what modern PlayStation 1 emulation has to offer :)

However, PGXP corrections can be a little buggy sometimes. If you ever want to turn them off, here's how to find them:

• Turning off PGXP globally
• Turning off PGXP only for a specific game

As mentioned in fixing buggy graphics, only “PGXP Texture Perspective Correction” needs to be turned off to fix broken graphics (if that happens to you).

Disc swapping for multiple-CD games

When you're playing a multiple-CD game and you reach the point to swap discs, here's what to do:

1. While a game is running, tap the Pause icon .
2. Tap Change Disc.
3. You'll enter Android's 'file selector' UI. Yours might look different from my screenshots. By default, this is in thumbnail view. You can tap the grid icon to switch to list view (makes things easier).
4. Next, tap the ISO for the next disc. In my example, I'm playing disc 1 of Final Fantasy VII, and my ISO is in “BIN/CUE” format. That means I need to tap “FINALFANTASY7-2.CUE” for disc 2. If my ISO was in “CHD” format, I'd need to tap “FINALFANTASY7-2.CHD”. If my ISO was in “ISO” format, I'd need to tap “FINALFANTASY7-2.ISO”. Do you see the pattern?
5. After selecting the ISO for the next disc, DuckStation returns to the game and you'll see messages on the upper-left about how it switched to the next disc. Then follow the prompts within the game to proceed.

Save states

Save states is a feature that saves the exact spot you are in any game. You can recall your save state at any time. There's quick to access. Here's how:

1. While a game is running, tap the Pause icon .
2. Tap Save State.
3. DuckStation offers multiple slots, allowing you to have many save states. Tap on a slot, then DuckStation will immediately return to the game.
4. When you want to recall your saved state, repeat the steps but select Load State. Then select the slot of the state you want to load.

New to emulation? If you're new to video game emulation, I don't want to confuse you into thinking that save states are what you're supposed to use as the only means to save your progress with DuckStation. Save states are an optional feature. You can still save your game at save points as you would on a real PlayStation 1. In-game saves are loaded at the game's title screen (like on a real PS1) - they're not loaded via the Pause menu.

Pro Tip: If you're playing a game that has in-game saving (such as an RPG) I recommend that you use both save states and in-game saving to save your games. That way you'll always have a backup.

Memory card: copying/moving/deleting saves

DuckStation gives you the option to manage your saves in an exclusive editor or using the PlayStation 1's native interface. The difference is that DuckStation's editor is far more robust.

Fast forward

While a game is running, tap the Pause icon then select Toggle Fast Forward. DuckStation will return to the game and it will be running in fast forward. To turn off fast forward, simply repeat the same steps.

Capturing screenshots

This is a little tricky. At the time I'm writing this, DuckStation doesn't have a shortcut to capture a screenshot. It does, however, let you set a gamepad button to capture screenshots when you go to Controller Settings > Hotkeys > Save Screenshot.

If capturing screenshots are important to you (and you don't have a gamepad), switch to ePSXe for Android or RetroArch.

Using cheats

DuckStation auto-downloads cheats! Enabling cheats takes mere seconds.

1. While a game is running, tap the Pause icon .
2. Tap Patch Codes. (They can't call it “Cheat Codes” because the word 'cheat' raises a red flag with Google's protections.)
3. Next, select the cheats you want to use. Tap OK when you're done. That's it!
   • The Add button adds new cheats . It's a little confusing - don't tap 'Add' thinking it's the confirmation button after you've selected the cheats you want to use.

Q: Help! I get a black screen when I load games!

If you load a game and you get a black screen, that's a catch-all issue that could be the result of several potential causes. Try running through the following troubleshooting.

Dumping your PSX games to ISO

Dumping your own PSX games to ISO requires a PC with a CD-ROM or DVD-ROM drive. I have step-by-step directions for this process in my RetroArch (Windows) tutorial.

Finding PSX ISOs

In the late 2010s, a new ISO was introduced called “CHD”. This format is now commonly used for systems such as PlayStation 1, Sega Saturn, Sega CD/Mega CD, and PC Engine CD/TurboGrafx16-CD. CHD guarantees that games will run effectively on modern video game emulators (from a file compatibility perspective).

To find PlayStation 1 ISOs in CHD, I recommend searching Google with “archive.org playstation 1 chd”. Clicking the first link typically brings you directly to the list of CHD ISO downloads. If the link takes you to a landing page , click SHOW ALL to reach the downloads page.

If you want more options for downloading ROMs, check out my links page.