If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Mini Metro is an upcoming minimalistic subway layout game. Your small city starts with only three unconnected stations. Your task is to draw routes between the stations to connect them with subway lines. Everything but the line layout is handled automatically; trains run along the lines as quickly as they can, and the commuters decide which trains to board and where to make transfers.
However the city is constantly growing, along with the transport needs of its population. How long can you keep the subway system running before it grinds to a halt?
Drag the mouse from one station to another to create a line between them.
Drag a line’s terminator to another station to extend the line.
Drag a line’s terminator over the last station in that line to remove it from the line.
Once you’ve played past a week, you’ll earn upgrades for the metro. To place an upgrade, move the cursor to the far left. Drag one of the green icons from the upgrade menu onto a line or station (as appropriate).