Marble Madness is an arcade video game designed by Mark Cerny, and published by Atari Games in 1984. It is a platform game in which the player must guide an onscreen marble through six courses, populated with obstacles and enemies, within a time limit. The player controls the marble by using a trackball.
Klax is a 1989 computer puzzle game designed by Dave Akers and Mark Stephen Pierce. The object is to line up colored blocks into rows of similar colors to make them disappear, similar to Columns.
Source: Wikipedia, "Marble Madness", available under the CC-BY-SA License.
Source: Wikipedia, "Klax (video game)", available under the CC-BY-SA License.