Parallax

Parallax is an option which controls how much the biome background scrolls relative to the foreground.

Settings of 0–100 (inclusive) are available.
 * A setting of 0 (default) will have the background (which consists of sky, walls, etc.) scroll with the foreground (what the player walks on and bumps into etc.).
 * A setting of 100 will scroll the background tiles at a high speed compared to walking just a little to the left or right.

Tips

 * This effect is most noticeable Underground where the dirt backgrounds can be seen scrolling when the player moves and has Parallax set high.