Battle for Wesnoth is one of the most refined 2D turn based strategy... Read All If you have spent much time in Open Source gaming Battle for Wesnoth is a project you are familiar with. Battle for Wesnoth has been going strong since 2003 and the developers have released big sets of updates including large graphical overhauls, extra campaigns and features. As the game has evolved over the years it's been a pure cross platform game and playable on Windows, Mac and Linux long before Steam released a Linux client opening the floodgates to more cross platform games. Recently the Wesnoth project dropped on Steam which means that it's available, for free, on Steam to play right now.
Battle for Wesnoth is one of the most refined 2D turn based strategy games around and if you haven't tried it, I encourage you to give it a shot.
"The Battle for Wesnoth is an open source, turn-based strategy game with a high fantasy theme. From the plains of Weldyn to the forests of Wesmere, from the mines of Knalga to the soaring peaks of the Heart Mountains, take part in over a dozen adventures spanning centuries! Play as a young prince as he flees the encroaching forces of the Lich Lords to a new home across the sea... Delve into the blackest depths of the earth to craft a jewel of fire itself... Travel the continent in a daring quest to reclaim your rightful throne from a usurping queen... Step into the shoes of a young mage, his village beset by orcish invasion, as he seeks vengeance and immortality... Battle the undead hordes of a foul necromancer as he marches upon your capital... Lead a daring group of survivors across the blazing sands to a final confrontation with an unseen evil... The choice is up to you."
More on the Steam version and the 1.14 Horizons update below.