Press '←' or '→' to move through presets. Press 'L' to load from a save code. Press Space Bar to show/hide list of presets. You can tweak the parameters to create anything from a solid timey-wimey tunnel to a spiralling triangular wibbly-wobbly inter-dimensional wormhole. 100% Pen: Circular (sprite) background or full screen Cycling: How quickly the colours change Closure: How "closed" the vortex/tunnel is Depth: How far back into the screen the vortex goes Segments: The number of sides to the vortex Speed: The velocity at which you travel into the vortex Thickness: The width of the vortex lines Twistiness/Bendiness: How quickly the vortex twists and bends. This affects it from the end of the vortex so how deep and fast the vortex is will affect how long it takes to see these changes
