Compatibility notes for the X games on Windows 10
We can confirm that all X games run under Windows 10. Nevertheless, in some cases there a couple of tweaks necessary. Listed below you find a couple of known problems for all or only specific games and workarounds. If you encounter a problem with either of the games, please check if it is listed below and if so, try out the mentioned solution. If it doesn't work or if the problem isn't listed yet, then please create a new topic with all of the requested pieces of information.

General problems applying to all games
The following problems and solutions apply to all or most of the games listed here.
Installation
The installation via Steam or from one of the newer disk versions like the X-Superbox still works under Windows 10 without problems.
If you, however, have one of the original disk versions of XBTF, XT or X2, you will most-likely have to do a manual installation, which basically means copying the data from the disk(s) to your harddrive. An example way of doing that for X2 is described in this topic.
Running the game (XBTF, XT, X2) in Fullscreen mode, the title bar and windows border are displayed.
To fix this, please do as follows:
- Download the "XBTF, XT, X2 - Windows 10_compat.zip" file from the download link below and extract it to an empty folder.
- Copy the three *.sdb files from that folder to C:\Windows\AppPatch\Custom\
- Double click the .reg file (which adds registry keys referencing these 3 files).
This assumes Windows is installed on C:\windows (if not, you need to edit the .reg file and change the paths to your dedicated Windows directory).
No voices are played under Windows 10 N
As with its predecessor, there's also an N version of Windows 10, which comes without installed Windows Media Player and related codecs (like the WMA codec). See also this Microsoft Support article for reference. The X games, however, need the wma codec to play the voice file(s). To fix this issue you can download and install the Media feature pack for Windows 10 N and Windows 10 KN editions.

Specific problems and workarounds for each game
The following problems and solutions only apply to the specific games listed.
X: Beyond the Frontier (XBTF)
Running the game in Fullscreen mode pops up a dialog box with the error message "Error opening video. Check your display settings! Further Information can be found in the manual or readme.txt".
To fix this problem you need to run the game in compatibility mode for Windows 7. To do so:
- Locate your game directory, i.e. the folder where you installed the game. If you cannot find it, you can search for the "X.exe".
- Right-click on the "X.exe" and select "Properties".
- Open the "Compatibility" tab and tick the "Run this program in compatibility mode for" box.
- From the list of Operating System select "Windows 7".
- Click "Ok" and start the game.
Running the game in windowed mode requires a 16bit color desktop.
To run the game in the 16bit color mode, please do as follows:
- Locate your game directory, i.e. the folder where you installed the game. If you cannot find it, you can search for the "X.exe".
- Right-click on the "X.exe" and select "Properties".
- Open the "Compatibility" tab and tick the "reduced color mode" box.
- From the list of Color modes select "16-bit color".
- Click "Ok" and start the game.
X-Tension (XT)
Running the game in Fullscreen mode pops up a dialog box with the error message "Error opening video. Check your display settings! Further Information can be found in the manual or readme.txt".
To fix this problem you need to run the game in compatibility mode for Windows 7. To do so:
- Locate your game directory, i.e. the folder where you installed the game. If you cannot find it, you can search for the "XTENSION.exe".
- Right-click on the "XTENSION.exe" and select "Properties".
- Open the "Compatibility" tab and tick the "Run this program in compatibility mode for" box.
- From the list of Operating System select "Windows 7".
- Click "Ok" and start the game.
X2: The Threat (X2)
The game won't start, when Antialising is enabled
To fix this problem, disable "Antialising" by clicking on the "Graphic Settings" option in the X2 starter and remove the tick from the "Antialising" box. Afterwards click on "Ok" to confirm your changes and start the game. If X2 still won't start, check that Antialising is not forced by your graphics driver in your driver control panel.
The game launcher offers weird monitor resolutions
In the X2 starter under "Graphic Settings" you can select a resolution for the Fullscreen mode. On Windows 10, X2 offers weird resolutions like 1900x480 and 1600x600 that will not fit any monitor. Therefore when starting the game, make sure that the correct resolution is selected.
The game starts in window mode, although the full screen option is selected
To solve this, open the Task Manager (Ctrl+Shift+Esc), while the game is running. In the Processes tab look for the X2 entry and expand it (right-click on X2 and select "Expand"). Aftwards right click on the expanded X2 entry and click on "Maximise".