Drag the map around, its not infinite though so you will find the borders. You can use your arrow keys or scroll wheel to zoom the map in or out. You can “select” a house and expand it, the house represents a city you rule. You can currently expand once and upgrade both cities. The map is quite small.
A little side project by the request of a friend. About the game: Supremacy 1914 is a player real-time strategy browser game created and published by German studio Bytro Labs, in which the player manages one of the countries in the world during World War I. Update Log: V0.1: Initial release with map dragging, zoom, and borders V0.2: Interactive buildings on map (You can upgrade buildings) V0.3: Expansion update (you can now build a city elsewhere) V0.3.1: Bug fixes