Ultima IV on iOS (zu4)

Play Ultima IV: Quest of the Avatar natively on your iPhone or iPad, with touch controls. This is an iOS port of the zu4 engine (a clean SDL2 fork of xu4).

Ultima IV is free — Origin released it — so the build downloads the game data for you. Getting it on your phone is basically two steps.

🚀 Install

Requires a Mac with Xcode and cmake (brew install cmake).

iOS Simulator (no Apple account needed):

git clone https://github.com/dmaynard51/ultima4-ios.git
cd ultima4-ios
ios/build-ios-sim.sh          # downloads U4 data, builds, prints run commands

On your iPhone/iPad (needs a free Apple ID; pass your 10-char Team ID):

ios/build-ios-device.sh ABCDE12345

That's it — it downloads the game data, builds, signs, installs, and launches. First run on the phone: trust the app once under Settings ▸ General ▸ VPN & Device Management, then hold it in landscape.

➡️ Touch controls: ios/CONTROLS.md (Find your Team ID: security find-identity -v -p codesigning — the code in parentheses.)

☕ Support this port

This iOS port is a free, open-source labor of love — porting the engine, adding touch controls, drawing the icon, and keeping it working takes real time. If it let you play Ultima IV on your phone and you'd like to say thanks, a coffee is hugely appreciated (and completely optional):

• ☕ Buy me a coffee (Ko-fi)
• 💜 GitHub Sponsors

You supply nothing but a Mac — the game data is downloaded from Ultima IV's free release; none is included in this repo.

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Everything below is the original upstream zu4 README (desktop builds).

Zesty Ultima IV

This is a cleaned up, modernized fork of "xu4".

WARNING

This codebase is probably broken in a lot of ways. I am not looking for code contributions right now, as I am trying to realize my vision for the project before accepting outside assistance. However, any suggestions or bug reports are welcome.

How to Compile

Currently, the following dependencies are required: libsdl2, libxml2

make

Where to Get Game Files

http://ultima.thatfleminggent.com/u4download.html
http://www.moongates.com/u4/upgrade/Upgrade.htm

Direct Links:

http://ultima.thatfleminggent.com/ultima4.zip
http://prdownloads.sourceforge.net/xu4/u4upgrad.zip?download
http://www.moongates.com/u4/upgrade/files/u4upgrad.zip

Project Goals

• Greatly simplify the codebase
• Remove all external dependencies from the engine
• Make the engine simple to plug into any framework
• Convert from ugly C++ to beautiful C
• Make it "Just Work"