Birds of War is a Steam Windows exclusive as of patch 1.1.5, with no official macOS client shipped or announced. Players who want to run the game on macOS have to use a Windows compatibility layer — most commonly CrossOver (Codeweavers' commercial Wine-based wrapper) — or unofficial Wine builds. The Mac path is community-supported, not studio-supported, and the launch-week experience has been functional but uneven across Apple Silicon and Intel Macs.
This page documents the macOS play path: CrossOver setup, controller mapping, known issues, performance expectations across Apple Silicon (M1/M2/M3/M4) and Intel Mac hardware, and the audio/proximity-voice quirks that macOS players have reported.
No Official Mac Client — The Reality as of 1.1.5
HexNest Games has not announced a native macOS client as of patch 1.1.5. The Steam product page lists Windows 10/11 as the only supported OS, and the Steam system requirements card does not include a Mac OS line. There is no Mac beta branch or Steam Play (Proton) official rating on the Steam store page at launch.
Players who want to play on Mac have three unofficial options:
- CrossOver (paid, ~$60 USD, codeweavers.com) — the most stable wrapper for UE5 titles.
- Unofficial Wine / Wine Staging (free) — requires manual Wine build and configuration.
- Cloud streaming via Steam Link / GeForce NOW — runs the Windows client remotely, sidesteps Mac compatibility entirely (if the player has a strong network connection).
The CrossOver path is the most documented. The Wine path requires more setup. The cloud streaming path is the easiest but depends on the player's network.
CrossOver Setup — Step-by-Step
The CrossOver setup for Birds of War is documented below based on launch-week community reports on the HexNest Discord. The setup varies between Apple Silicon and Intel Macs.
Step 1 — Install CrossOver
Download the latest CrossOver release from Codeweavers' website. The trial version is fully functional for setup verification, but the game is not free-to-play, so a CrossOver license is effectively required for sustained play. The CrossOver ~$60 license is a one-time purchase, not a subscription.
Step 2 — Create a New Bottle
CrossOver uses "bottles" (Wine prefixes) to isolate each Windows application. Create a new bottle:
- Bottle name: BirdsOfWar (or any name)
- Bottle type: Win10 64-bit
- OS: Windows 10 64-bit
Apple Silicon users should select the Win10 64-bit bottle type rather than the Win11 option, because the Win10 bottle has better compatibility with UE5 titles on ARM translation.
Step 3 — Install Steam Inside the Bottle
Inside the new bottle, install Steam by running the SteamSetup.exe installer. CrossOver will auto-handle most of the Steam installer compatibility, and Steam will launch inside the Wine prefix.
Step 4 — Install Birds of War
Once Steam is running inside the bottle, install Birds of War through the standard Steam library. The install size is ~10 GB, and CrossOver will route the install to the bottle's virtual C: drive.
Step 5 — Launch and Tune
The first launch will likely require some tuning. The most common tuning knobs:
| Setting | What to change | Reason |
|---|---|---|
| Windows version | Windows 10 64-bit | Better UE5 ARM translation |
| D3DMetal | Enabled (Apple Silicon) | Replaces DX11 with Metal translation |
| MSync | Auto | Frame pacing improvement on Apple Silicon |
| ESync | Auto | Improved threading on macOS |
Step 6 — Audio Setup
Audio is the most reported issue under CrossOver. The most common fix is to switch the audio backend:
- Right-click Birds of War in Steam → Properties → Launch Options
- Add:
-AudioDriver=DirectSoundor-AudioDriver=Wasapi(try both) - If proximity voice chat fails, switch to
Wasapifirst, thenDirectSoundif Wasapi mutes directional audio
The audio backend tuning is the single most impactful change for proximity voice chat functionality on Mac.
Apple Silicon vs Intel Mac Performance
The performance difference between Apple Silicon (M1/M2/M3/M4) and Intel Macs is significant. The CrossOver + Apple Silicon path runs the game through Rosetta 2-style translation; Intel Macs run it through the native x86_64 Wine path.
| Hardware | Estimated 1080p Low | Estimated 1080p Medium | Notes |
|---|---|---|---|
| M1 | 30–45 fps | 20–30 fps | Playable at Low; medium preset requires Medium-quality AA |
| M2 | 45–60 fps | 30–45 fps | Comfortable at Low/Medium |
| M3 | 60–80 fps | 45–60 fps | Comfortable at Medium, light High preset |
| M4 | 80+ fps | 60+ fps | Closest Mac experience to a real PC |
| Intel iGPU | <20 fps | Not playable | Intel UHD/Iris Xe is below the minimum spec |
| Intel dGPU (Radeon Pro) | 30–45 fps | 20–30 fps | Playable on Macs with discrete Radeon Pro GPUs |
The performance numbers above are estimated from launch-week reports. The actual FPS will vary with overhead from macOS background processes and CrossOver translation cost.
Why Apple Silicon Is Faster Than Intel Macs
Apple Silicon uses unified memory architecture, which means the CPU and GPU share the same memory pool. UE5 titles that stream assets during gameplay benefit from this architecture because there is no copy step between CPU and GPU memory. CrossOver on Apple Silicon also uses the D3DMetal translation layer, which is more efficient than the DX11 translation used on Intel Macs.
The practical consequence is that an M2 MacBook Air runs Birds of War at playable frame rates while a 2020 Intel MacBook Pro with a discrete Radeon Pro 5600M does not.
Controller Mapping on Mac
The CrossOver path supports most controllers, but the mapping layer requires explicit configuration. The most common controllers and their mapping status:
| Controller | Mapping | Notes |
|---|---|---|
| DualSense (PS5) | Works via Steam Input inside the bottle | Trigger rumble is functional |
| DualShock 4 (PS4) | Works via Steam Input | No native PS button prompts |
| Xbox Series controller | Works via Steam Input | Best-supported controller on Mac |
| Switch Pro Controller | Works via Steam Input | Limited rumble support |
| Keyboard + Mouse | Native (no mapping layer) | Best for aerial precision |
The Steam Input layer inside the CrossOver bottle handles controller mapping, and players should configure their controller through Steam's controller settings rather than through CrossOver.
DualSense Trigger Effects
The DualSense trigger effects (adaptive triggers for Talon Dive commit) are partially supported under CrossOver. The trigger resistance works, but the trigger rumble effect is less pronounced than on a native PC install. Players who rely on the trigger feedback should expect a muted version.
Known Issues Under CrossOver
The launch-week community has surfaced several recurring issues under CrossOver:
Issue 1 — Proximity Voice Chat Directional Audio Fades
Symptom: The proximity voice chat is functional but the directional audio cues (left/right speaker separation) are muted.
Fix: Switch audio backend to -AudioDriver=Wasapi in Steam launch options.
Severity: Medium; competitive players lose positional audio cues.
Issue 2 — High-Refresh Monitor Caps at 60 Hz
Symptom: The CrossOver path on Apple Silicon typically caps refresh rate at 60 Hz even on ProMotion 120 Hz displays. Fix: Set macOS display to "ProMotion" before launching CrossOver; not always successful (estimated). Severity: Low; affects competitive refresh-rate optimization.
Issue 3 — Ragdoll Physics Stutters
Symptom: Ragdoll physics occasionally stutter during high-density Egg-spawn moments. Fix: Lower preset to Medium; disable ragdoll physics reduction in the graphics options (estimated). Severity: Low; cosmetic impact.
Issue 4 — Steam Overlay Does Not Render
Symptom: The Steam overlay (Shift+Tab) does not render over the game window. Fix: Disable Steam Overlay in Steam settings for Birds of War. Severity: Low; the overlay is not required for play.
Issue 5 — Quick Resume from Sleep Causes Crashes
Symptom: Resuming Birds of War from macOS sleep often crashes the CrossOver bottle. Fix: Quit Birds of War before putting the Mac to sleep (estimated fix; not officially documented). Severity: Medium; affects casual players who put the Mac to sleep between matches.
Cloud Streaming Path (Steam Link / GeForce NOW)
Players who own a strong network connection and want to sidestep CrossOver entirely can stream Birds of War through Steam Link (free, official) or GeForce NOW (free tier / paid priority tier). The streaming path runs the game on a remote Windows server and streams the video output.
- Steam Link: best for local-network streaming from a Windows host; requires a host PC.
- GeForce NOW: cloud-only, requires a strong network connection (50+ Mbps, low ping to a GeForce NOW server).
- Xbox Cloud Gaming: Birds of War is not confirmed on Xbox Cloud Gaming as of 1.1.5 (estimated).
The streaming path is easier than CrossOver but introduces a streaming latency layer that affects competitive play. Players who prioritize ranked MVB performance should avoid the streaming path.
The Cemu Emulator Confusion — Clarified
"Cemu" is a Wii U emulator and is not relevant to Birds of War. Players who land on this article after searching for "Cemu" are likely mixing up Birds of War with a Nintendo title. Birds of War is built on Unreal Engine 5 and runs on Windows; the relevant compatibility layer is CrossOver / Wine, not Cemu.
If a player arrived here expecting a Switch emulator setup, they want a different article entirely.
Should Mac Players Wait for a Native Client?
The question of whether HexNest will ship a native macOS client is open. Three signals from the studio's launch posture:
- The Steam product page lists only Windows; no Mac beta branch exists.
- The studio is three-person and is focused on post-launch balance patches.
- macOS share of Birds of War's PC market is estimated at <5% based on Steam Hardware Survey trends for similar UE5 indie titles.
The implication is that Mac native is unlikely in the first 12 months of the game's life (estimated based on studio size and historical UE5 indie trends). Players who want a native Mac client should monitor the HexNest social channels and the patch notes for any Mac-related announcement.
Frequently Asked Questions
Is there an official Mac version of Birds of War?
No. Birds of War is a Steam Windows exclusive as of patch 1.1.5. There is no official macOS client shipped or announced.
Can I run Birds of War on a Mac with CrossOver?
Yes. CrossOver runs Birds of War on Apple Silicon (M1/M2/M3/M4) at playable frame rates (estimated 30–80 fps depending on chip and preset). Intel Mac performance is below playable at most presets.
What about Steam Play Proton?
Steam Play Proton is a community-Maintained Wine layer. Proton is functional for Birds of War on Linux (see the Linux guide) but is not officially Steam-Verified for Mac.
Does proximity voice chat work under CrossOver?
Yes, but the directional audio may be muted. Switch audio backend to -AudioDriver=Wasapi in Steam launch options for the best proximity voice chat experience.
Is Cemu the right emulator for Birds of War?
No. Birds of War is built on Unreal Engine 5, not a Nintendo SDK. Cemu is a Wii U emulator and is not relevant. The correct compatibility layer is CrossOver or Wine.