Sudden Strike is a modification for Red alert 2's expansion the Yuri's Revenge. Sudden Strike completely balances the game, adds in new units like the Rafale Lift or the Dragon Artillery as well as many more. It greatly enhances the gameplay to make the game more fun by changing the current style of tactics and strategies in Yuri's Revenge as well as adding new units which will employ new tactics and strategies. The AI has been refined greatly to give a player the challenge they want. Sudden Strike has been in development since March 2003 and has an active site. The first public version was released in November 2003, V1.1 was release in November 2004, and many more releases should follow in the future.