OpenFront

OpenFront is a massively multiplayer real-time strategy game set on a world map. Up to 100 players start from a single territory and expand, taking land from neutral areas and from each other. Players form and break alliances during each match, and there is no base building or unit micromanagement. It is free to play in the browser at openfront.io, with an Early Access edition on Steam. The game is open source and available in 35+ languages.