DRTS focuses on the core of real-time strategy, forgoing resource gathering, base building, and unit types.
You can play the game on https://play.drtsgame.com
The simplicity and comprehensive tutorial make it easy to jump into within minutes.
Both multiplayer and singleplayer mode are already implemented, the game is work in progress though and updates will follow.
Note that the camera controls are not yet explained in the tutorial. Here is how to control the camera:
Camera panning: Hold down the right mouse button and drag to move the camera
Camera Zoom: Use the mouse wheel to zoom.