This demonstration of anaglyph 3D cartesian coordinates is doubling as a new spin on the old arcade game Tempest.
If you modify a setting using one of the sliders you should click on one of the checkboxes twice, otherwise the slider
will keep keyboard focus and be afected by the left and right arrows.
You'll need red/blue anaglyph glasses for the cheesy 3D effect.
If you want to make it a little harder, use File->Visibilities and turn the Paths off.