click the button on the top right to add stations drag the stations to move them press e or slide the top left slider to go into line mode to add lines go into line mode and click on the station and then click on the second station to cancel the line click on the first station again click the green flag to reset to change the colours go into line mode and change the colour, saturation and brightness sliders
inspired by mini metro currently there is no way to delete stations or built lines