A number of custom maps and modifications are available for the real-time-strategy video-game "Command and Conquer: Red Alert 2" and its 2001 expansion pack "Yuri's Revenge." A custom map allows the player to play out battles in a new setting designed either by Westwood Studios, the company behind the games, or by other players using open-source map editing software. These custom maps and modifications are easily installed. They just have to be inserted into the root directory to which "Red Alert" was originally installed.
Download the Yuri's Revenge map .zip file to your desktop.
Unzip the folder using either WinZip or WinRar -- both programs are available for free online.
If the file contained is an executable file, with the extension .exe, you can double click on it to automatically install it.
Map files have the file extensions .mpr or .mmx for "Red Alert 2", and .yrm for "Yuri's Revenge". Select the file you want to use.
Find the root directory where you installed Red Alert 2 on your computer. It will usually be in the C drive, under "Program Files", then "Westwood".
Move the map file into the "Red Alert 2" root folder.
Load up "Red Alert 2: Yuri's Revenge" and you will be able to use the new map.
If you change your mind and don't want to use the map file any more, simply delete it from the root "Red Alert 2" folder.