territorial io is a multiplayer online strategy game that can be played in a web browser. In this game, players compete against each other to capture territories and expand their own territory, while defending against attacks from other players.

Players start with a small territory and must strategically move their units to capture neutral territories or enemy territories. As players capture more territories, they earn more resources and can use them to build and upgrade structures, such as walls, turrets, and barracks, to help defend their territory.