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Plus: If you know how to build this kind of games (in HTML5) and you're interested in a (i guess good) idea please contact me on twitter @ricricucit
I've found things like phaser.io and a map editor (http://www.mapeditor.org/index.html) but since i don't have any clue on how to start i'm looking for something a bit more specific on RTS games.
Thanks.