Advanced Strategic Command is described as 'free, turn based strategy game. It is designed in the tradition of the Battle Isle series from Bluebyte. ASC can be played both against the AI and against other human players, using hotseat or PlayByMail'. There are more than 10 games similar to Advanced Strategic Command for a variety of platforms, including Android, Windows, Android Tablet, Linux and iPhone. The best alternative is The Battle for Wesnoth, which is both free and Open Source. Other Advanced Strategic Command like games are FreeCiv (Free, Open Source), Total War (Paid), TripleA (Free, Open Source) and Ikariam (Freemium).
Freeciv is an open-source, turn-based strategy game based on Civilization II. Inspired by the history of human civilization, the game commences in prehistory and your mission is to lead your tribe from the stone age to the space age...
Total war is a turn based/ RTS strategy game, you play in different historical battles. Total War: Attila and Medieval II: Total War is also avariable for Linux. Represent entire series of Total War games.
TripleA is a free (under GPL) turn based strategy game based on Axis & Allies board game. A wide variety of map scenarios have been developed for TripleA (World War II, Punic Wars, Napoleonic wars, etc.
Ikariam is a browser based massively multiplayer online game of the strategy genre produced and maintained by Gameforge AG. The game is set in the era of classical Greece in an archipelago, with players being made tyrant of a small town, which they must expand and lead.
UniWar is a turn-based strategy game where players battle it out on the field with units of differents races, building bases and using the terrain to overcome their opponents towards victory. Several modes are available along with many maps to play.