D4Mac

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

🌐 d4mac.com · 📥 Download latest · 🐛 Report an issue · 🍺 Buy me a beer

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⚙️ This is a community build (jonx fork)

Unofficial build maintained at github.com/jonx/D4Mac while upstream is quiet — every change is also submitted upstream as a PR. Not affiliated with @MichaelLod; tips still go to him.

Supported

• Hardware/OS: Apple Silicon (M1–M4/M5), macOS 14 Sonoma or later.
• Diablo IV: ✅ confirmed working on the current patch — 3.1.0 (verified end-to-end on 3.1.0.72698, Season 14, 2026-07). 3.1.0 started importing FindNextFileNameW, which stock Wine doesn't export, so the game aborts at launch with error 127 on other builds — this one adds the export, so it launches to the menu and plays.
• Blizzard can change the client on any patch; if a future D4 patch breaks launch, open an issue and it'll need a new build.

Good to know

• Logging in works — an emailed verification code, a browser passkey, or the Battle.net mobile app push notification all work for signing in.
• D4Mac doesn't need network access. It makes no game-server connections and doesn't need the "find devices on local network" permission — that prompt comes from Battle.net (its LAN peer-download feature) and is safe to Deny. (D4Mac only reaches the internet to check for its own updates.)
• You can quit D4Mac once your game is running — Battle.net and the game run as independent processes and keep playing after the launcher closes.
• First-play stutter is normal. Diablo IV compiles Metal shaders the first time you cross into a new area or trigger a new effect, which causes brief hitches. They fade as you play — the shader cache builds up and persists across sessions, so revisits and later sessions are smooth. (Not a bug, and not specific to this build.)
• RAM matters. Diablo IV wants ~20 GB of unified memory. Verified comfortable on a 32 GB Mac; on 16 GB Macs expect heavy swapping and stutter — set Texture Quality to Low/Medium and close other apps, or it'll struggle.

What's different in this fork

Everything here is also open as an upstream PR — this build just bundles them while upstream is between releases:

• Diablo IV 3.1.0 launch fix — exports FindNextFileNameW so the Season 14 client loads (else: error 127).
• Battle.net installs on a clean Apple Silicon Mac — bundles the x86_64 FreeType/GnuTLS chain, so no Intel Homebrew needed (fixes the blank-window / BLZBNTBTS… install failures). (PR #4)
• Fast downloads + stable gameplay — Wine sync defaults to None and the Settings toggle actually works (fixes the ~4 KB/s throttle and mid-session freezes). (PR #4)
• Live install progress bar (%, GB, MB/s). (PR #4)
• Import an existing Diablo IV install — reuse a CrossOver/Porting Kit/Whisky/GPTK download instead of re-downloading ~140 GB. (PR #6)
• Move bottle to another disk — put everything on an external SSD, linked back invisibly. (PR #9)
• Reset launcher state — one-click fix for Battle.net stuck on "Update — Queued." (PR #8)
• Metal FPS/HUD toggle. (PR #7)
• Signed + notarized — clean double-click install (no right-click bypass).

Credits & respect

• @MichaelLod — created D4Mac. All the hard parts (the Wine/GPTK stack, the launcher) are his. Tips go to him, via the in-app button and d4mac.com.
• @BastianOrth2 — the FreeType/GnuTLS bundling, sync-off default, and progress bar (PR #4).
• @0ximu — deep diagnostics in issue #2 (missing-library cascade, sync deadlocks, launcher-state reset, external-SSD setup).
• @jonx (this fork) — the Diablo IV 3.1.0 fix, plus #6 (import existing install), #7 (Metal HUD), #8 (reset launcher state) and #9 (external-drive move).

This fork is a stopgap and will happily be obsoleted by an official release.

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 end-to-end · patch 3.1.0 confirmed working (3.1.0.72698, 2026-07)
First-launch shader compile	⚠ ~50 % of the time it hangs once on the Metal pipeline race; second launch always works
Other Blizzard titles	not tested — try and open an issue

Requirements

• Apple Silicon Mac (M1, M2, M3, M4 — any)
• macOS 14 (Sonoma) or later
• ~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.