Enduro is a racing video for the Atari 2600. The object of the game is to complete an endurance race, passing a certain number of cars each day to continue the next day. Enduro features a day and night cycle, which was still a new concept at the time.
Enduro consists of maneuvering a race car in the National Enduro, a long-distance endurance race. The object of the race is to pass a certain number of cars each day. Doing so will allow the player to continue racing for the next day. The driver must avoid other racers and pass 200 cars on the first day, and 300 cars with each following day.
As the time in the game passes, visibility changes as well. When it is night in the game the player can only see the oncoming cars’ taillights. As the days progress, cars will become more difficult to avoid as well. Weather and time of day are factors in how to play. During the day the player may drive through an icy patch on the road which would limit control of the vehicle, or a patch of fog may reduce visibility.
If a player succeeds in racing five days or more, an on-screen racing trophy pops up. At the time of release, if the player sent a photograph of this achievement to Activision, they received a patch declaring them an “Activision Roadbuster”.
When the player reaches 999.999 points or km the game will reset and start from zero, then the game has no end and will continue racing forever.
(source: Wikipedia / Enduro)