Objective: Switch railcars and lead them to stations in a specified order.
Instructions: Click an arrow on any train engine to move it in the indicated direction. Click anywhere on
the engine to stop it. Click any switchstand to change the track direction. Move an engine adjacent
to a railcar to couple to it. Click between railcars to uncouple. Move the train to a station to
complete the level. Additional features are introduced with tutorials before each level.