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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteThe dependable way to preserve a DRM-free game is to archive more than its executable: download the storefront’s complete offline installer set, every required patch and language file, the manuals and serial information, and a copy of your saves. Keep that archive on at least two separate devices, preferably with one copy stored elsewhere, then periodically restore-test a title so you know the files and compatibility notes are still usable.
For games sold through GOG, open the game in your account, choose the support area, and use GOG Support’s “DOWNLOAD OFFLINE BACKUP GAME INSTALLERS” option. GOG describes its DRM-free releases as working without GOG GALAXY authentication, the GOG GALAXY client, or an internet connection for offline functionality. Multiplayer, achievements, leaderboards and other online-only features can still require connectivity.
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What a DRM-free backup actually preserves
A launcher library is convenient, but it is not the same thing as an independent backup. A durable archive should let you reinstall the game when the launcher is unavailable, your account is inaccessible, a download link has changed, or the original computer has failed.
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- Install media: every installer part needed to perform a complete installation.
- Updates and add-ons: patches, language packs, expansion installers and other files that were supplied separately.
- Documentation and entitlement details: manuals, readme files, serial keys and edition information.
- Personal data: save games, configuration files and, where you intentionally use them, locally stored mods or profiles.
GOG Support uses the feature label “DOWNLOAD OFFLINE BACKUP GAME INSTALLERS.” GOG Developer Docs explain the company’s DRM-free philosophy this way: “GOG’s ‘DRM-Free’ philosophy means that games released on GOG can’t have any DRM/copy protection and should work in all possible scenarios, regardless of the result of GOG GALAXY authentication, GOG GALAXY client presence or Internet connection availability.” That describes the intended offline operation of the game files; it does not turn an online service into an offline one.
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In a 2022 statement, GOG identified the ability to “play games purchased on GOG offline, make backup copies, and install them as many times as you need” as a key DRM-free benefit. Treat that as the preservation goal: retain usable installation files and your own save data, while documenting the conditions that a particular title still needs.
Start with an inventory, not a download folder
Before downloading, make a list of the games you actually want to preserve. An inventory prevents a common failure: having a large directory of installers but no reliable way to tell which edition, language, patch level or account it belongs to.
| Record | What to enter | Why it matters during recovery |
|---|---|---|
| Title and edition | Exact game name, edition, expansion bundle or remaster designation | Different editions can have different installers and save compatibility. |
| Platform | Windows, macOS, Linux or another supported platform shown by the store | Prevents installing the wrong build and flags operating-system constraints. |
| Source account | The storefront account that owns the license | Identifies where to obtain a replacement file if an archive is damaged. |
| Installer version and date | The version or build printed by the storefront or installer, plus your download date | Lets you distinguish an older, tested set from a later replacement. |
| Language and region | Language packs included and any region or edition notes | Explains why a restored installation may not match the original. |
| Required runtimes | Any runtime, redistributable, compatibility layer or legacy component noted by the publisher | Gives you a recovery plan when the game launches on a newer system. |
| Save location | The path or folder where the game stores saves and settings | Separates personal progress from the installation directory. |
Keep this inventory as a small text, spreadsheet or database file in the archive itself and in a separate backup of your records. If a storefront later changes its presentation, your notes still identify what was saved.
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Download the official offline installer set
Use the storefront’s offline-download control
- Sign in to the account that owns the game and open the game’s library or product page.
- Open the game’s support or download area and select GOG Support’s “DOWNLOAD OFFLINE BACKUP GAME INSTALLERS” option.
- Download every setup file shown for the edition and platform you recorded. Do not assume the first file is sufficient when the page lists multiple parts.
- Download the supplied patches, language packs, manuals, wallpapers or other extras that you may need to reproduce the purchased edition.
- Save the files to a temporary staging folder before moving them to your long-term archive. Keep the original filenames unless you add information in a separate manifest.
Multi-part installers are a single set. A missing part can make an otherwise intact archive unusable, so keep all parts in one game folder and record the total number of files. If the storefront provides separate installers for different operating systems, keep those in clearly named subfolders rather than mixing them.
Do not confuse a launcher download with an offline installer
A launcher may install a game through its own cache or account session without exposing a reusable installer. For preservation, prefer the explicitly labeled offline files. If you use a launcher for convenience, treat its installed directory as an additional copy, not as the only archival source, unless the publisher explicitly documents that it is a complete redistributable installer.
Keep entitlement information with the files
Store the product edition, account identifier or account name used to obtain it, and any serial key supplied for that game in the record. Do not put passwords or recovery codes in an unencrypted text file beside the installers. A key that is needed during installation should be stored in a protected password manager or encrypted record, with a note in the archive saying where it is kept.
Verify that the download is complete
Verification catches incomplete transfers before you move a set to cold storage. At minimum, compare the number of files and their displayed sizes with the storefront’s list. If the publisher supplies hashes, calculate a hash for each file and compare it with the published value.
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| Check | How to perform it | What a failure means |
|---|---|---|
| File count | Count every installer, patch, language file and document in the staging folder. | A missing part or omitted extra may prevent installation or remove needed content. |
| Size | Compare each file’s byte size with the value shown by the download source, where available. | A truncated or interrupted download is likely. |
| Hash | Use the publisher’s stated algorithm and compare the resulting digest character for character. | Any mismatch means the file should be downloaded again before archiving. |
| Installer launch | On a working machine, start the installer far enough to confirm that it recognizes the set; cancel before changing the production installation if necessary. | A missing companion file, corrupt archive or wrong platform build may be exposed. |
On Windows, PowerShell’s Get-FileHash can calculate a digest. On macOS or Linux, a tool such as shasum can do the same. Use the algorithm specified by the publisher; a hash is useful only when you compare it with a trusted reference.
Get-FileHash .setup_part1.exe -Algorithm SHA256
shasum -a 256 setup_part1.binPlace a plain-text manifest beside the files with the filename, byte size, hash algorithm and digest, installer version, download date and any source notes. This turns a folder into an auditable archive without altering the installer data.
Use a folder structure that survives a future reinstall
Choose one naming scheme and use it for every title. A structure such as the following keeps installers, updates and personal data separate:
Game-Title--Edition/
00-record/
inventory.txt
checksums.txt
source-notes.txt
01-installers/
Windows/
macOS/
Linux/
02-patches-and-language/
03-manuals-and-extras/
04-saves-and-config/
05-restore-notes/The numbered folders are only an example; the important rules are consistency and separation. Keep all parts of one installer set together. Put patches in a sequence or name them with their version so that you can tell which one is newer. Never overwrite a known-good installer with a later file without recording the change.
Write a restore note while the game still works
For each title, record the installation order, whether a patch must be applied before another patch, the runtime or compatibility layer required, and where the game stores saves. Note whether you originally ran it through a launcher or directly from the executable. These details are often more valuable than a screenshot of the installed directory because they explain how to reproduce the working state.
Back up saves and configuration separately
Installers reproduce the program; they do not automatically preserve your progress. Locate the game’s save and configuration folders while the original installation is still available. The location can vary by title and operating system, so use the game’s manual, support documentation or an in-game setting that reveals the path rather than assuming every game uses the same directory.
- Exit the game and, if applicable, wait for any synchronization process to finish.
- Copy the complete save folder, not only the newest-looking file. Include profiles, configuration files and locally stored key bindings when they affect playability.
- Keep the save copy in the game’s
04-saves-and-configfolder, with the date of the copy in the record. - For games with multiple characters or profiles, retain the original folder names and add a short note identifying the profile.
- Restore a copy to a disposable test installation before deleting or replacing the original save data.
Cloud synchronization can be useful for convenience, but it is not a substitute for a local save archive. A synchronization service may propagate an unwanted deletion or may not contain every configuration file the game needs.
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Build redundancy with a 3-2-1 approach
One drive is a single point of failure. The practical minimum is two complete copies on separate devices, with one in another location when that is feasible. A 3-2-1 plan goes further: three copies, on at least two kinds of storage, with one copy kept off-site.
| Copy | Typical role | Operational guidance |
|---|---|---|
| Working archive | Portable external SSD connected when you are adding or restoring games | A portable external SSD in the Samsung T7 Shield class offers a compact, durable style of storage for a traveling archive. Choose capacity from the total size of your installers, patches and saves, with room for future additions. |
| Second local copy | Another external drive or a separate storage device | Make it a complete copy, then disconnect it when not updating so accidental deletion or malware cannot affect both copies at once. |
| Separate-location copy | A drive stored elsewhere or a cloud-storage tier | Keep the archive encrypted when appropriate and verify the service’s retention, download and file-size terms before relying on it. |
Copy the manifest and inventory to every location. When you add or replace a file, update the copies deliberately rather than assuming an automatic sync has transferred every part. If the archive is large, prioritize a complete game set over a partial copy: an incomplete multi-part installer is not a usable backup.
Restore-test the archive periodically
A backup is only useful if it can be read and understood later. Set a recurring reminder that fits how often you add games, and test at least one archived title from a copy that is not your everyday working drive.
- Choose a title with a documented installer set and no irreplaceable live save data.
- Copy the installer files to a test location and compare their hashes with the manifest.
- Install on a supported operating system or an appropriate compatibility layer, following the recorded patch order.
- Launch the game without signing in to the storefront client when the title is intended to work offline.
- Restore a disposable copy of the saves and confirm that the expected profile or progress appears.
- Record the result, including missing runtimes, permission problems, display issues, or a patch that must be applied for the current operating system.
Do not treat a successful launch as proof that every feature is offline-capable. Test the features you actually care about and document which ones require an internet connection.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Know what “offline” does and does not include
DRM-free installation and online service availability are separate questions. The installation should not depend on GOG GALAXY authentication, the GOG GALAXY client or an internet connection for its offline functionality, according to GOG’s documentation. A title can nevertheless contain network-dependent components.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstall| Feature | Expected offline behavior | What to record |
|---|---|---|
| Installing the archived game | Should use the offline installer files without requiring a launcher login. | Installer version, platform and any runtime requirement. |
| Single-player content | Generally the purpose of the DRM-free offline package, subject to the game’s own design. | Whether the restored save loaded and which patch was used. |
| Multiplayer or matchmaking | May require the game server, a platform service or an internet connection. | Service dependency and any account or server requirement. |
| Achievements, leaderboards and social features | Can remain unavailable without connectivity even when the game itself launches. | Which online-only features were not available in the test. |
| External account checks | A particular title may have a separate service dependency despite the DRM-free storefront policy. | The publisher’s current requirement and the date you confirmed it. |
Storefront policies, installer links, patches and operating-system support can change. Keep the date of each download and revisit the source account when you update an archive, but do not discard a tested installer merely because a newer one appears.
Troubleshoot the failures that matter most
The installer says a file is missing
Check that every part is in the same folder and that filenames were not changed by a file manager or cloud service. Compare the file count and hashes with your manifest. Download the missing or mismatched part again from the official offline-download area; do not combine files from an unrelated edition or language set.
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The hash does not match
Copy the file again from the staging location, then recalculate the digest. If the mismatch persists, download a fresh copy, check available storage and connection stability, and record the new hash only after it matches a publisher-provided value. If no published hash exists, document that the file was checked by size and installer launch rather than implying cryptographic verification.
The game asks for a launcher or internet connection
Confirm that you used the offline installer rather than a launcher cache. Check whether the request comes from an online-only feature, an optional service or a separate component. If the core game still refuses to run, consult the title’s current support notes and your restore record; the DRM-free policy does not guarantee that every third-party service embedded in every game is available offline.
The restored game cannot find the saves
Verify that the save folder belongs to the same edition and profile, then place it in the title’s documented save location for the operating system being used. Launch once, exit, and inspect whether the game created a different folder or profile. Preserve the original save copy while testing so an automatic conversion or overwrite cannot destroy it.
An older game will not launch on a newer operating system
Read the restore note for required runtimes, compatibility layers and supported operating systems. Install only the components documented for that title, test in a disposable environment, and record the working combination. A preserved installer is still valuable even when the original operating system or runtime must be recreated.
The storage device fails
Stop writing to the failing device and switch to the second copy. Rebuild the replacement archive from the intact copy, then verify hashes and perform a restore test. This is why separate devices and, when practical, a separate location are more important than simply buying a larger single drive.
A maintenance routine that keeps the archive useful
- Add each new purchase to the inventory before downloading its files.
- Keep installer parts, patches, language files, manuals and serial information in the same game record.
- Update the manifest whenever a file is replaced, re-downloaded or superseded.
- Maintain two complete device copies and an off-site copy when practical.
- Review the archive after major operating-system changes and add compatibility notes discovered during a restore test.
- Periodically open one archived title from the non-working copy and record the result.
- Protect account credentials and serial keys separately from the ordinary installer folder.
The goal is not to preserve a frozen snapshot of a launcher. It is to retain a self-contained, documented installation set and the personal data that makes the game yours, with enough redundancy and testing to recover it years later.
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