Retroid

I followed these tutorials to get Morrowind running on my RP2+, naturally it works on the 3+ as well.

I've typed out a basic write up of the guides below, but in my opinion it's just easier to follow the video guides, so go just go watch those and give the guy a view. Note: I followed these steps ages ago, so some of the mod files might be updated with different file names, but I hope the general process should still apply.

Retro Breeze Video Tutorials

• Install Morrowind: How to play Morrowind on the Retroid Pocket 2 Plus | Full tutorial | Super easy to get set up!
• Mod Morrowind: MODDED MORROWIND ON Retroid Pocket 2+ | Tamriel Rebuilt | Full Modding Tutorial for Android

Prepare for Installation

Prerequisites

• You need a copy of Morrowind for access to the game files.
• A compression application to make transferring files faster and easier. One for your computer and an android one on your Retroid device (such as ZArchiver).

On your retroid device...

• Download OpenMW (omw_release_0.48.0-46.apk) and install it to your device.

On your computer...

• Find & open the Morrowind installation folder.
• Select the "Data Files" folder and "Morrowind.ini", and copy them into their own folder called "Morrowind". This will be for the Retroid device.

Adding Mods

Feel free to skip this section if you don't want to bother with mods yet.

Prerequisite

• Have a free account on Nexus Mods.

Mod List

Patch for Purists.

• Click "Files" and "Manual download" under "Latest version".
• Extract files to a folder on desktop.
• You'll notice the folders from the archive share names with the folders in the "Data Files" folder in the Morrowind folder you made for your device. Move the contents of the mod's folders into their corresponding folders in "Morrowind". Allow any duplicate files from the mod to overwrite the originals.

Truetype Fonts for OpenMW.

• Click "Files" and download both "Fonts" and "HD Texture Buttons (English)" here.
• Extract the "Fonts" folder from the first archive and the "textures" folder from the second archive.
• Merge those with their corresponding files in Morrowind > Data Files.

Tamriel Data - Required for Tamriel Rebuilt.

• Click "Files" and download "Tamriel Data (Vanilla).
• Extract the contents. Open the 00 Core folder, and copy all the content there except for the docs folder into the their corresponding places in Morrowind > Data Files.

Tamriel Rebuilt

• Click "Files" and download both "Tamriel Rebuilt" and the "TR_Hotfix" files
• Extract the Tamriel Rebuilt archive.
• Open "00 Core", migrate the "textures" folder content, then move the "TR_Mainland.esm" file into Data Files.
• Open "01 Faction Integration" and move the esp file to "Data Files".
• Do the same for the rest of the folders except for the Abot's Travels mod.
• Extract the hotfix file and migrate that data.

Installing Morrowind to your device

• Compress the Morrowind folder into a single 7z file (Morrowind.7z). This will enable a much faster and more reliable transfer from your computer to your retroid device.
• Copy the 7z file to your retroid device. Wait for it to finish.

*Back on your retroid device

• Find and extract the 7z file so it occupies its own folder named "Morrowind". Wait for it to finish.
• Open the OpenMW app, tap "Game Files", then find and select the "Morrowind" folder you just extracted.

At this point the game should be playable, but you might want to tweak some settings first...

In OpenMW

• On-screen controls...: Remove all buttons except for the very top row and the darker buttons on the side. You can remove an on-screen button by tapping on it then tapping the "Alpha-" button until it disappears.
• UI scaling factor: You can tinker with this to suit your preference. Retro Breeze set his to "1" on his 2+, but I have my 3+ set to 1.7 because I don't really have great eyesight and the resolution is higher.
• Mouse mode in menus: Absolute touch controls is recommended. It just means you click where you tap.
• Hide on-screen buttons: off.
• Always show top-bar icons: on.

In OpenMW > Mods
If you chose to include mods to the game, follow these steps now.

PLUGINS: Enable and drag these files into the following order:

1. Morrowind.esm
2. Tribunal.esm
3. Bloodmoon.esm
4. Patch for Purists.esm
5. Patch for Purists - Semi-Purist Fixes.esm
6. Patch for Purists - Book Typos.esm
7. Tamriel_Data.esm
8. TR_Mainland.esm
9. TR_Mainland_2101_hotfix.esm (Newer version might look different)
10. TR_Factions.esm
11. TR_Preview.esm
12. TR_Travels_(Preview_and_Mainland).esm

RESOURCES: Enable and drag these files into the following order:

1. Morrowind.bsa
2. Tribunal.bsa
3. Bloodmoon.bsa
4. PT_Data.bsa
5. TR_Data.bsa

In-game Setup

At this point you should be good. Tap the blue play button to launch the game. (If you installed the mod, you should notice "Tamriel Rebuilt" mentioned in the loading status bar as the game loads in.)

• D-pad + A button or touch to operate the main menu.
• Tap the keyboard icon to add text to text fields. Tap again to dismiss.
• Start > Options > Controls: Drag the camera sensitivity down to make the right stick less sensitive.
• Start > Options > Controller: Customize controls to your liking here.
• In-game menus can be moved and resized by touching and dragging.
• To check if the Tamriel Rebuilt mod installed, you can check the world map to see if it expands well beyond the Morrowind mainland.
• If you chose not to include mods, but would like to add them in later, I recommend watching the Retro Breeze video. He explains the process very nicely.

Good luck!