Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Unreal Tournament 99 in OpenGL mode is to dark, and the brighness settings have no effect.
Also it doesn't help to set flux to "disable when using" or "disable during fullscreen".
Only thing that helps is exiting the app.