Assembling:

• Click on the background to add a ball

• Click on a ball to make it go away

• Drag on the background add a line

• Drag a ball to another ball to merge them

Animating:

• Drag any ball to animate your creation

Customizing:

• Type &uarr over a ball to make it bigger

• Type ↓ over a ball to make it smaller

• Type ← or → over a ball to change its color

Changing the view:

• Hold down the '[' or '9' key to rotate left

• Hold down the ']' or '0' key to rotate right

Use the ESC key to erase everything