The goal of the game is to help boxes find their lost little children.
There are 3 methods to select the Target Box:
- - left-click a box to set it as Target Box.
- - press Space Bar to switch Target Box.
- - hold Space Bar, then use WASD or Up-Down-Left-Right arrow keys to select Target Box.
To roll the Target Box, use either of the two methods:
- - press key A and key D
- - press LEFT and RIGHT arrow key
- - left-click (then either hold the mouse or not) an area without be occupied by boxes in game field.
To undo one step (In fact, can undo any steps):
- - click the Undo menu at top right corner.
- - press Backspace or Esc.