free strategy online games
1. Tycoon Online
Tycoon Online is a web based business game. 
Tycoon Online aims to create a virtual business environment where each player owns and run his own company. At the same time the system requirements shall be low and the prerequisite the same for every player.
2. Bushtarion
Bushtarion is a free web-based strategy game in which you get to head up your own gardening company, and ally or war with other companies.Research new technologies and gain access to a massive array of units, ranging from petrol bombers, to terrorists, to snipers, to assassins, to apaches, to androids, to huge robotic tyrannosaurs.
Choose from one of five finely balanced technology routes - protestors, thugs, military, robotics or special operations, each with their own unique play-style and set of tactics.Be defensive and develop immensely powerful immobile units like automated sentry turrets and bunkers, defending your land from would-be attackers, or be an all out offensive player and go rampaging through other players land, killing & bribing their staff, and stealing their land for your own crops.
3. Neveron
Neveron is free strategic online game. Build your empire through near-limitless possibilities from military conquest to peaceful economic growth. Join thousands of players competing for dominance in a free game of intense tactics, cunning politics, and futuristic warfare.
4. TEQ
Terra Est Quaestuosa is a free strategic webgame that is played by thousands of players. Build up your country, join a team and acquire the most networth.
5. WWII - War of Supremacy
World War II - War of Supremacy is free online game played in browser.You can chose from six nationalities: Germany, Italy, Japan, Great Britain, United States and Russia.Build you army and crush your enemies or discover nuclear weapon and nuked them all.
6. 1000 AD
1000 AD game is a turn based game. You only need a web browser to play it.
10 civilizations to chose from each with special units like samurai, berserker, paladin or shaman. The most important resource of the game is land. There are 3 types of land: mountains, forest and plains. Each building can only be built on one of those. You can send your armies to attack other empires. There are 3 types of attacks: army, catapult and thief.
7. Nuke Zone
NukeZone is a strategic text-based game played on the web directly through your browser.Featuring real-time team-orientated gaming, NukeZone can also be played as an individual. Build your province into an international Nuclear power and destroy all opposition along the way with your army of air, sea and ground forces.
8. Sky Lords
SkyLords is a real-time, browser based, online, multiplayer strategy game (MMOG), which includes many features such as diplomacy, trading, piracy, espionage, space battles, custom spaceship model designing, round bonuses and clan warfare.
9. Master of Medival Times
Your objective in MoMT is to gain exp, build and train your army, Attack and defeat your enemies, move up to higher levels, join or form an alliance (if you not in an alliance you will find it impossible in higher levels), make enemies and allies and become the strongest player to become The Master of Medieval Times.
10. Sim Country
Simcountry is your opportunity to be the President of a country or the Chief Executive in a group of huge corporations.You play with and compete against thousands of players worldwide.
It can be played in a simple way but is also allows you to become a very sophisticated user, involved in many interesting economic and financial decisions. You may choose to manage all details or leave some to an automated process.