Command & Conquer: Red Alert is a real-time strategyvideo game of the Command & Conquer franchise, produced by Westwood Studios and released by Virgin Interactive Entertainment in 1996. The second game to bear the Command & Conquer title, Red Alert is the prequel to the original Command & Conquer of 1995, and takes place in the alternate early history of Command & Conquer when Allied Forces battle an aggressive Soviet Union for control over the European mainland. – Wikipedia
To mark the 13th anniversary of Command and Conquer and the announcement of Red Alert 3, EA released Command and Conquer: Red Alert as freeware. After the promotion ended they allowed third-party mirrors to pick up and also ship the addons for free. The community has started repackaging it to installers that do not require burning the original ISO images and included their latest fan patches that modernize the renderer, remove duplicate files, fix bugs and include content from the PlayStation release. Those repacks typically also include modding tools as well as network utilities for multiplayer matches. – Wikipedia
Normaly there is one button, but because there is a great community behind this game we have two options.
Option 1 is the free full game which is made available by Gamepressure.
Option 2 is a Skirmish – online – LAN version which is made available by ccnet.org with 1920 x 1080 support!