1. The aim of the game is to stack the same colour in one tower (column). When there are 3 or more boxes with same colour on top each other you can discharge them (out of the stack) by clicking on the lowest box.
2. When moving a box, first select the box and then grounding destination.
3. The single boxes arriving by truck at the stack in the right hand lower corner, shall be placed in the stack within a certain time window. The number on the box is counting down from 3 to 1, and if the player have not chosen a location for the container in the stack the container will be grounded automatically in a random position.
4. In the upper left corner you will find the number of boxes still to be moved.
5. At the end of the game, you will get a score