Graphics Settings

To switch between Windowed and Fullscreen mode press Alt+Enter. Various graphic settings are in the file binaries\data\config\default.cfg. To change a setting, create a newfile, on Windows, create: %appdata%/0ad/config/local.cfg, on Linux/OS X, create: ~/.config/0ad/config/local.cfg. Open both these files in Notepad, and copy any lines you want to change from default.cfg into the new local.cfg. Here are the main ones you might be interested in changing:

• Render path: If you have any problems with graphics due to an older graphics card, add the line renderpath=fixed to make sure 0 A.D. uses no shaders. If this fixes the problems, please report it as a bug to us.
• Fancy water: Again, if you have an older graphics card, or just don't want all the fancy effects, you can disable pixel-shaded water by adding fancywater=false. Note that it's also possible to toggle fancy water while the game is running however, if you only want to check how things look temporarily or just want to use it occasionally. You do that by clicking on Menu, then Settings, and there check/uncheck the Enable Water Reflections checkbox.