Widelands is a strategy game released in 2011 designed and developed by Widelands Development Team. Widelands can be described as a open source game and can be played on the following operating systems: Windows, Linux, Mac OSX. Widelands is also a multiplayer game.
“Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it. Still, it is easy to get started through playable tutorials.” - Widelands Development Team
in developement, playable