[EN] How to install and play

Download

Stable version

December 2021 RC1
Version for players:	Windows 64-bit	Windows 32-bit
Version for modmakers:	Windows 64-bit	Windows 32-bit
Other versions and files	...

Nightly

Latest build
Version for players:	Windows 64-bit	Windows 32-bit
Version for modmakers:	Windows 64-bit	Windows 32-bit
Other versions and files	...

Build versions explanations

Archives are named like OpenXRay.Release Master Gold 64-bit.7z

The first word denotes the content, Release Master Gold is a configuration of the build and 64-bit is an architecture.

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There are three types of content:

• OpenXRay – standard game archive with the engine. This is what players should download.
• Utils – archive that contain utilities for modding, like level compilers, build packagers, etc.
• Symbols – this is needed only for engine developers. Contains debug symbols.

There are four configurations:

• Debug – special debugging build intended for engine developers only.
• Mixed – unoptimized build intended for modmakers and engine developers for testing purposes. Includes even more debug functionality than Release.
• Release – performance optimized build, which includes advanced capabilities for debugging the game process. Intended for modmakers.
• Release Master Gold – final release build with maximum optimizations for performance, intended for players.

And architectures don't need any explanations I guess.

Previous releases can be downloaded on the Releases page.

You can get the latest builds on AppVeyor or GitHub Actions. (the latter requires authorization)

Installation on Call of Pripyat

1. Download archive that you want
2. Rename original bin folder to some other name (for example, bin_backup)
3. Extract the archive to the game root folder
4. Launch the game using original launcher Stalker-COP.exe

Installation on Clear Sky

1. Download archive that you want
2. Rename original bin folder to some other name (for example, bin_backup)
3. Extract bin folder (only) from the archive to the game root folder
4. Download gamedata for CS and extract it to the game root folder
   • gamedata.zip – if you use December 2021 RC1 release of OpenXRay
   • gamedata.zip – if you use use latest nightly build of OpenXRay

Installation for mods

OpenXRay is compatible with most original mods for COP, but there are few things to consider:

• No compatibility with mods that use modified engine (OpenXRay is a modified engine itself, so no compatibility with other engines). There are few exceptions to this.
• Engine is less tolerant to errors in mods, so it may crash or won't even load where original X-Ray would ignore the error (but that might lead to strange bugs or even saves corruption). We plan to return compatibility with original engine and ignore some of the errors in player's version of the engine.

Installation steps per se:

1. Download archive that you want
2. Rename original bin folder to some other name (for example, bin_backup)
3. Install mod first
4. Extract only bin folder from the OpenXRay archive to the game root folder