Scrolling

From Styleguide

scrolling

The direction in which a two-dimensional game progresses. The most common types of scrolling are side-scrolling (left-to right or right-to-left) and vertically-scrolling (top-to-bottom or bottom-to-top).

Auto-scrolling games or portions of games scroll the playfield without direct player input.

Example: While most of Super Mario. Bros. 3’slevels are of the standard side-scrolling variety and allow you to play at your own pace, a few of the later levels are auto-scrolling.

Wrong: sidescrolling, side scrolling.

Also see: Genres, rails.