| Feature | Official Doom 3: BFG Edition (Steam/GOG) | RG Mechanics Portable Repack | | :--- | :--- | :--- | | | Bethesda, id Software (via Steam, GOG) | Unofficial Repack Group (R.G. Mechanics) | | Installation | Requires installation via a digital storefront | No installation; run directly from folder | | Portability | Tied to a PC or account; requires client to run | Fully portable; runs from any drive | | File Size | Larger download, smaller install | Smaller download, full install | | Updates | Receives official patches and support | No official updates or support | | Integrity | Verified by official storefronts | User beware: source-dependent |
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