This is a 2D graphics game based on a traditional raiilway shunting (switching) puzzle.

The objective is to assemble a train of 5 wagons in sequence in siding 1 as in the picture below.
There are 3 additional wagons marked "X" which may be left anywhere in sidings nos. 2 & 3

Controls are screen based:

• The 3 bottom centre buttons control the locomotive's movement.
• Box (currently showing the number 1) indicates siding selection. Pressing it rotates through siding - 1, 2, 3, 1....
  
• Wagons are selected for coupling/uncoupling by touching them.
  

Rules (there are always rules!):

• Maximum of 3 wagons can be parked in sidings 2 & 3 and 5 wagons can be parked in siding 1.
• A wagon can be coupled to the end of the train only when it's in contact with the end of the train.
• Only the last wagon in a train can be uncoupled and only when it's within the siding limit (indicated with a blue arrow)
  
• Siding can only be switched when the train (of 3 wagons max.) is fully in the headshunt i.e.left of the blue arrow below the siding switch box.
  

Anything else? Oh, yes, good luck!