Iron Grip: Marauders is a free to play 3D strategy browser game that you can sail above the world in your own Marauder Airship, or engaged in ground and base combat. Players assume the roles of airship captains able to take advantage of research and engineering to create an entirely unique army to combat enemies with.
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Silverlode Interactive's new game Captains of DarkTide is a fantasy free-to-play naval strategy MMORPG, where players build and explore a fantasy world as the captain of a mighty ship. Fight legendary creatures, other vessels, other players, or join with your friends and fight epic bosses to win treasure and glory.
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Turn based strategy meets a tactical multiplayer puzzle. Practice your skills and then challenge your friends - or fight side by side in online co-op.

In the beginning, the Gods created four pure elements and set them in balance: Earth, Air, Fire, Water. Now an ancient contaminant has risen, the Plague. Battle the Plague with 7 different Gods, then turn the tables in competitive or co-op multiplayer.

Tribal Trouble 2 is a fast-paced realtime strategy game set in the wacky Viking age where pillaging and plundering were everyone's favorite pastimes!
Create you own Viking chieftain (or chieftess), sail quests to foreign places, challenge other online players to battle and then go spend your loot on more Viking gear!

Quantum Legacy is a completely free 3D cross platform, multiplayer RTS game. Featuring a complex single player campaign, space battles, online death-match, as well as never before seen concept in RTS gaming known as multi-sector style of game play. This innovative feature allows a player to control events in multiple sectors, with changes occuring in one location directly affecting the other.

Bang! Howdy is an multiplayer online strategy game revolving around the "Wild West". There is no cost to download the game (or to play it in-browser) and start playing.
Create your character then take part in the Gold Rush and other game scenarios in the wacky Wild West!

Call of the Kings is a 3d Real Time Strategy game that focuses on Player vs Player combat. Unlike classic RTS games the RTS element is applied to army movement, espionage, diplomacy and estate improvement and not tactical troop movements and resource gathering. You might say that the game style is closer to computer games like Civilization, Heroes of Might and Magic and board games like Stratego and Junta than RTS games like Command and Conquer or Warcraft.