Widelands, Free Realtime Strategy Game

When searching for a good free realtime strategy game, I found "widelands". This game is a open source that have a good view, and the gameplay is also nice.

This is the description of the game.

"Widelands is an open source (GPLed) real-time strategy game. It is built upon the SDL and other open source libraries and still under heavy development. If you knew Settlers I & II™ (© Bluebyte), then you already have a rough idea what Widelands is all about. Yes, it is where the inspiration for Widelands came from You can find more information on the game in our wiki. For playing rules, scenarios and extensions see the About page. For installation directions and various troubleshooting see the Help page. Visit also the Forums for chat with the community about the game, playing, translation, graphics, music and much more."

And this is a screenshot of widelands.org homepage.

Source: widelands.org