Marathon

Description
Marathon is a 1-player arcade game for the TRS-80 CoCo.
The game consists of 4 short sidescrolling arcade games all played on a different part of the screen. The player tries to reach the far edge of the screen, while avoiding obstacles as the level scrolls. First the player tries to slide down a hill, then they fly a plane avoiding multiple obstacles, next they drive down a congested highway, and finally they navigate a submarine through an underwater cavern. There are 4 levels of difficulty, and they player receives a score based upon how far they travel in each level.