jhaizhou-ops / d2r-mobile

# D2R Mobile
**An open-source iOS / macOS compatibility layer for Diablo II: Resurrected with the Reign of the Warlock expansion.** It brings the Nintendo Switch release you bought, expansion included, to iPhone, iPad and Mac in full: the original game code runs natively, every control is rebuilt for touch, the frame rate holds at 60 fps, and you are in a game one second after the main menu. There is now a native macOS version as well (first version): on an Apple silicon Mac it starts on double-click and works with keyboard, mouse and gamepad. Apple TV 4K (3rd generation, A15) has a community port (developer preview) that has reached the character-selection screen only on its author's device; see the device table below.
This is not a tech demo that "sort of runs". It is a mobile version polished for daily play, from your first character all the way through the endgame.
Platforms: iPhone / iPad (iOS 26 and later; iOS 18 – 25 with the older-API build) · Mac (Apple silicon, macOS 26 or later; macOS 15 – 25 with the older-API build) · Apple TV 4K (3rd generation, A15; community port, developer preview) · Game version: Switch release with Reign of the Warlock, 1.0.34.0 (corresponds to PC version 3.3.94012) · English / 中文 / Español / Русский · License: MIT · **Bring your own game files**
中文: README.zh-CN.md · Español: README.es.md
| 100% | 60 fps | about 1 s | about 3.8 W |
|:---:|:---:|:---:|:---:|
| The original gameplay, because it is the original program | Steady, with no drops once the device warms up | From the main menu into a game | Whole-device power draw at 60 fps |
## What it is, and what it is not
**It is:**
- The game's own aarch64 program, **executing directly on the device**, with no emulated CPU. iPhone and Switch use the same class of processor; only the handful of instructions that cannot run unchanged under Apple's kernel are rewritten, and every other byte of the program is left exactly as shipped. Every class, every Runeword, Terror Zones, bosses, drop rules and quest flow are identical to the original.
- The platform services the game expects — system calls, the file system, the graphics API, audio, input — provided by a small host written for Apple platforms. The graphics API is reimplemented entirely on Apple's Metal with no emulation layer in between, and the shaders are translated offline from the game's originals.
- A port built for phones, and taken all the way: a complete touch control scheme, edge-to-edge iPhone and true full-screen iPad display, controller support, a power saver mode, save sync, English and Chinese, and a whole set of endgame modes and quality-of-life features the original never had.
**It is not:**
- An emulator, cloud gaming, or streaming.
- **A source of game content. It contains none and distributes none.** There is no game program, art, text, data table or shader in this repository; all of that is generated on your own machine from your own files (see docs/GAME_FILES.md). What the repository does carr