Privacy Architecture
Private by design.
Zero analytics. Zero telemetry.
What Onism Play keeps on your Mac, how per-store bottles keep each store’s data separate, and the narrow cases where data communicates with game stores.
On-Device by Default
Your game library, bottle prefixes, save files, and configuration live exclusively on your Mac. We operate zero cloud servers or user account databases.
Zero Telemetry Egress
No analytics SDKs, no behavioral trackers, no telemetry daemons, and zero background pings to Onism. Network requests only occur when connecting to stores.
Keychain Credential Isolation
Store session cookies and authentication tokens for Steam, Epic, and GOG are sealed inside the macOS Keychain with per-store isolation boundaries.
Separate Bottles
Each store gets its own Wine prefix inside the app's data folder. Games run with your user account's permissions, and Onism Play never asks for root.
Scope & Minimal-Surface Architecture
This policy governs the Onism Play native macOS application, its bottle execution subsystem, and this website. “Onism,” “we,” and “our” refer to Onism Play.
We engineer software with a strict local-first posture: execution runs directly in user-space on your Mac, each store has its own bottle (a separate Wine prefix), and we never operate an telemetry or tracking server.
What stays on your Mac
Store Credentials in Keychain
Steam, Epic Games, and GOG OAuth tokens are stored exclusively in the macOS Keychain. They are marked to prevent extraction and never leave your device.
Separate Wine Prefixes
Each store’s Windows C: drive registry, save files, and game assets live inside ~/Library/Application Support/OnismPlay/Bottles/. Games run with your user account’s permissions and are not sandboxed, so only run software you trust.
Zero Kernel Extensions
Onism Play runs 100% in user-space without any system modifications, root daemons, or kernel hooks (.kext), maintaining macOS System Integrity Protection (SIP).
Deterministic Offline Mode
Installed DRM-free titles (GOG) and offline Steam games can be launched completely disconnected from the internet with zero license verification checks.
Store Integration & Authentication
When you sign in to Steam, Epic Games, or GOG Galaxy within Onism Play, authentication occurs directly between your Mac and the official store endpoints:
- ✓Steam: Connects directly to valve endpoints (*.steampowered.com)
- ✓Epic Games: Connects directly to Epic Services (*.epicgames.com)
- ✓GOG Galaxy: Connects directly to GOG endpoints (*.gog.com)
Onism Play operates no middleman proxy or relay servers. Your passwords and credentials never pass through Onism infrastructure.
Cloud Saves & Backups
Cloud saves are synchronized using the official store protocols directly to your personal accounts. If you choose local snapshot backups, archives are stored in your user-designated location (such as personal iCloud Drive) encrypted under your Apple ID.
What leaves your device
Only data you explicitly initiate leaves your Mac:
- Game downloads and store updates directly from Valve, Epic, or GOG content delivery networks.
- Wine engine downloads fetched directly from open-source GitHub release mirrors.
- Optional Discord Rich Presence communicating with the Discord client on your Mac over local RPC.
Onism Play never transmits device identifiers, hardware serial numbers, installed game titles, play duration, or IP telemetry to Onism.
Website Privacy
This website (play.onism.ai) operates with zero ad tracking, zero tracking cookies, and zero cross-site profiling scripts. Your dark/light theme preference is saved in your browser’s local storage only.
Sovereignty & Data Deletion
Because we store zero user data on remote servers, you maintain 100% data sovereignty. To delete all local data, simply remove the app and delete the directory ~/Library/Application Support/OnismPlay/. All bottles, caches, and save files are immediately removed from your disk.
Terms of Service
Plain-language principles governing software use, game licenses, hardware safety, and Apple runtime boundaries.
License & Permitted Use
Onism Play grants you a personal, non-exclusive license to run the application on Apple Silicon Mac hardware. You may configure engines, build APFS bottles, and launch Windows applications for personal, non-commercial gaming.
Third-Party Games & Store Terms
Onism Play connects directly to third-party distribution platforms (Steam, Epic Games, GOG). Your use of those platforms is governed by their respective Subscriber Agreements and End User License Agreements (EULAs). You represent and warrant that you hold legitimate licenses for any software installed into an Onism Play bottle.
Apple Software & D3DMetal Disclaimer
Apple’s Game Porting Toolkit, D3DMetal, and Metal Developer Tools are proprietary software owned by Apple Inc. They are not bundled with Onism Play. Any use of Apple software or evaluation binaries must comply strictly with Apple’s licensing terms and Developer Agreements.
Warranty Disclaimer & Compatibility
Onism Play is provided “as is” without warranty of any kind. Because Windows-to-Mac translation depends on evolving DirectX features, game anti-cheat systems, and macOS versions, compatibility with any specific video game title is not guaranteed.
Section 09
Privacy & terms inquiries
If you have questions about our zero-egress architecture, these terms, or wish to audit local bottle boundaries, write to us directly at: