D4Mac

Free, open-source Battle.net launcher for Apple Silicon Macs. Run Diablo IV and other Blizzard games natively. No CrossOver licence. No subscription.

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What it is

A native macOS .app that wraps a self-contained Wine 11.0 + Apple Game Porting Toolkit 3.0 stack, set up specifically to run Battle.net and Diablo IV on Apple Silicon. Drag-to-Applications, double-click, log into Battle.net, play.

The launcher itself is MIT-licensed open source. The .app bundle ships third-party binaries (Wine, GPTK, DXMT, MoltenVK, MS VC++ Redist, Adobe Source Han Sans) — see THIRD_PARTY_LICENSES.md for the full breakdown.

Status

Game / app	Status
Battle.net	✓ launches, login + chat work, keyboard works
Diablo IV	✓ playable; ⚠ see Known issues for in-game hangs
Other Blizzard titles	not tested — try and open an issue

Known issues

Mid-game freeze on macOS ≤ 26.3 (Rosetta 2 deadlock)

After anywhere from a few minutes to several hours of play, the game can freeze unrecoverably and macOS shows a persistent beachball. This is a Rosetta 2 deadlock, not a Wine or D3DMetal bug — the wedged thread parks on os_sync_wait_on_address inside Apple's libd3dshared.dylib, triggered when Blizzard's anti-cheat reads translated x86_64 code pages. CodeWeavers publicly confirmed this is an Apple-side bug — nothing the launcher can patch from the Wine side.

Fix: upgrade to macOS 26.4 Tahoe (released 2026-03-24) or later. Apple silently patched the underlying Rosetta 2 issue in 26.4. Users report 1+ hour clean play sessions on 26.4 where 26.3 and earlier still freeze.

If you can't upgrade yet, these mitigations reduce — but do not cure — the freeze frequency:

• Run the game in Windowed or Borderless Windowed mode (not Fullscreen)
• D4 Graphics → disable FSR; set Background FPS to 30
• Bottle env (Settings → Advanced): WINEESYNC=1, ROSETTA_ADVERTISE_AVX=1

First-launch shader compile hang

About half the time, the very first launch hangs during the initial Metal pipeline shader compile — a race in Apple's D3DMetal pipeline state object creation. Force-quit (⌘⌥⎋) and relaunch; the second launch always works because the shader cache is now warm.

Spaces / Mission Control freeze

Switching macOS Spaces or invoking Mission Control while D4 is running in fullscreen can wedge the game's main window thread (an AppKit busy-spin variant). Running in Borderless Windowed mode avoids this entirely.

Requirements

• Apple Silicon Mac (M1, M2, M3, M4 — any)
• macOS 14 (Sonoma) or later — macOS 26.4 Tahoe strongly recommended for D4 stability (see Known issues)
• ~400 MB free for the .app bundle, plus space for the Battle.net + game install (Diablo IV is ~80 GB)
• Apple ID (only if Gatekeeper prompts you to verify the bundle on first launch)

Intel Macs are not supported and will not be — Apple's GPTK is Apple-Silicon-only.

Install

1. Grab the latest signed D4Mac.dmg from the Releases page.
2. Open it, drag D4Mac.app to /Applications.
3. Launch it. The first run unpacks Wine and runs the Battle.net installer; it takes ~2 minutes.
4. Log in to Battle.net, install your game, play.

If a launch ever gets weird (Battle.net hangs, login fails repeatedly), open Settings → Reset bottle. The reset rebuilds the bottle from the bundled prereqs — your D4Mac.app itself stays untouched.

Why this exists

Battle.net + Diablo IV on Apple Silicon already work via CrossOver, but CrossOver is $74 and bundles features most users don't need. Apple's GPTK is free for non-commercial redistribution, and Wine has been LGPL since forever. There was no reason this had to cost anything — so it doesn't.

D4Mac is funded entirely by beer tips. Optional, never gated, no nag.

Build from source

git clone https://github.com/MichaelLod/D4Mac.git
cd D4Mac
Resources/Fonts/fetch.sh   # downloads MS Core Fonts (one-time)
Prereqs/fetch.sh           # downloads VC++ Redistributable (one-time)
# build.sh also auto-runs Prereqs/fetch-wine-libs.py to stage the x86_64
# FreeType/GnuTLS chain into the Wine runtime (one-time, ~8 MB from GHCR).
./build.sh                 # debug build
./build.sh --release       # optimised
./build.sh --release --notarize --dmg   # full release pipeline

You'll also need a built Wine 11.0 runtime staged at ../wine-cx26.1/. See THIRD_PARTY_LICENSES.md for sources, or the LGPL CodeWeavers release at media.codeweavers.com/pub/crossover/source/.

build.sh --release --notarize --dmg produces a signed + notarised DMG ready for distribution. Notarisation requires:

• Developer ID Application certificate installed in your keychain
• Apple notarytool credentials saved as profile name D4Mac (xcrun notarytool store-credentials D4Mac …)

Architecture

   ┌──────────────────────┐
   │   D4Mac.app (Swift)  │   SwiftUI launcher: bottle manager,
   │                      │   first-run installer, Battle.net launcher
   └──────────┬───────────┘
              │ spawns
              ▼
   ┌──────────────────────┐
   │   Wine 11.0 (LGPL)   │   PE loader, kernel32, ntdll, …
   │  + Apple GPTK 3.0    │   D3D12 / D3D11 (64-bit) → Metal forwarders
   │  + DXMT v0.72        │   D3D11 / DXGI (32-bit, BNet CEF) → Metal
   │  + MoltenVK          │   Vulkan fallback
   └──────────────────────┘

The whole runtime lives inside the .app bundle at Contents/SharedSupport/Wine/. No system-wide install, no PATH manipulation, no admin password.

Repository layout

Path	Purpose
Sources/D4Mac/	SwiftUI launcher source
Resources/	App icon, Info.plist, fonts, entitlements
Resources/Fonts/fetch.sh	One-time fetch of MS Core Fonts For The Web
Prereqs/fetch.sh	One-time fetch of VC++ Redistributable installers
Prereqs/fetch-wine-libs.py	Stages the x86_64 FreeType/GnuTLS chain into Wine's lib/external (GHCR bottles)
web/	The d4mac.com Next.js site (download landing page, BMC tip checkout, dashboard)
build.sh	Build / notarise / DMG packaging
THIRD_PARTY_LICENSES.md	Per-component licence breakdown
LICENSE	MIT — for the launcher source only

Reporting issues

Use GitHub Issues. Include:

• macOS version (e.g. 14.5 Sonoma)
• Mac model (e.g. MacBook Pro M3 Pro)
• D4Mac version (Settings → About)
• Logs from ~/Library/Logs/D4Mac/
• Screenshots if you have them

Licence

Launcher source: MIT — see LICENSE.

The .app bundle ships third-party binaries with their own licences. Most importantly, Apple's GPTK is redistributable for non-commercial use only, which means D4Mac itself can be freely distributed for download but may not be sold while GPTK is bundled. See THIRD_PARTY_LICENSES.md for every component and its terms.

Not affiliated

D4Mac is a community project. Not affiliated with, endorsed by, or sponsored by Blizzard Entertainment, Apple Inc., or CodeWeavers Inc. "Diablo" and "Battle.net" are trademarks of Blizzard Entertainment.