

You can search for them on web, or you can go to the online lobby (you can visit ) and let other players send you the maps (if the host chooses a map you don't have, when the game starts, the map will be automatically transferred to you). However, there are many tower defences maps in Red Alert 3.

Since this game is competitive-oriented, a play-style focused on defences is usually regarded as "Turtle strategy" and normally people like a more aggressive play-style. Red Alert 3 is actually quite balanced (from online & competitive play's perspective, since all three factions have pretty the same amount of players in Online 1v1 Ladder's top 20)
