Striketactics.net

Core game features:

• Multiplayer focus (dedicated servers, not P2P) with 1v1, team and free-for-all modes. 
• Auto-matchmaking and lobby matchmaking. 
• State-of-the-art ELO-based ranking system, match history and global ladder.
• Full-featured RTS in the standard game mode, with base-building, production, technology research, queuing, worker units and a complex economy system that is easy to learn but difficult to master.   
• Play single player games y8y8y8 against AI (easy, medium, hard and a cheating AI).
• Play deathmatch, a 4-person free-for-all tug-of-war style game mode. Control the center to earn extra resources and destroy all enemy bases!
• Face endless waves of enemy units in the survival game mode (with multiplayer cooperative).
• Control groups, observer mode (with zoom) and custom hotkeys.
• Built with HTML5 and Javascript - no downloads or plugins required and near-instant load times. Extreme convenience and extreme accessibility for PC gamers and non-PC gamers alike. 
• Play on Mac, PC and Linux. The game is designed to be highly performant on non-gaming, low-end PCs, but will utilize your graphics card if you have one. This isn’t your typical web game built in flash!
• Hard-hitting and industrial soundtrack with 15 original scores composed by On Being Human. Listen to the full soundtrack on Spotify.
• Global cloud-based hosting infrastructure to accomodate players primarily in North America and Europe. Far east and Australian players are welcome too!
• Enormous maps, as big as 2.5 billion pixels.
• Share games as URLs. To play with a friend, simply send your game room URL. Or, open your game room to the public and people will join through the lobby browser. 
• Easily create custom maps with the simple and easy to use browser-based map editor. Save and share your maps as text files.